From: Phil Sutter <phil@nwl.cc>
Date: Tue, 12 Aug 2025 15:31:47 +0000 (+0200)
Subject: json: Do not reduce single-item arrays on output
X-Git-Tag: v1.1.5~15
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=5e492307c2c93b7eb654691ca87ddc7ad86640d8;p=thirdparty%2Fnftables.git

json: Do not reduce single-item arrays on output

This is a partial revert of commit a740f2036ad0d ("json: Introduce
json_add_array_new()"), keeping the function but eliminating its primary
task which is to replace arrays of size 1 by their only item. While
support for this on input is convenient for users, it means extra casing
in JSON output parsers to cover for it. The minor reduction in output
size does not justify that.

Fixes: a740f2036ad0d ("json: Introduce json_add_array_new()")
Closes: https://bugzilla.netfilter.org/show_bug.cgi?id=1806
Signed-off-by: Phil Sutter <phil@nwl.cc>
Reviewed-by: Pablo Neira Ayuso <pablo@netfilter.org>
---

diff --git a/src/json.c b/src/json.c
index 977f5566..4c8b4f34 100644
--- a/src/json.c
+++ b/src/json.c
@@ -62,14 +62,10 @@ static int json_array_extend_new(json_t *array, json_t *other_array)
 
 static void json_add_array_new(json_t *obj, const char *name, json_t *array)
 {
-	if (json_array_size(array) > 1) {
+	if (json_array_size(array))
 		json_object_set_new(obj, name, array);
-	} else {
-		if (json_array_size(array))
-			json_object_set(obj, name,
-					json_array_get(array, 0));
+	else
 		json_decref(array);
-	}
 }
 
 static json_t *expr_print_json(const struct expr *expr, struct output_ctx *octx)
diff --git a/tests/py/any/log.t.json.output b/tests/py/any/log.t.json.output
index 051c448b..bec70a35 100644
--- a/tests/py/any/log.t.json.output
+++ b/tests/py/any/log.t.json.output
@@ -9,7 +9,20 @@
 [
     {
         "log": {
-            "flags": "all"
+            "flags": [
+                "all"
+            ]
+        }
+    }
+]
+
+# log flags all
+[
+    {
+        "log": {
+            "flags": [
+                "all"
+            ]
         }
     }
 ]
diff --git a/tests/py/any/queue.t.json.output b/tests/py/any/queue.t.json.output
index 1104d760..ea372238 100644
--- a/tests/py/any/queue.t.json.output
+++ b/tests/py/any/queue.t.json.output
@@ -7,3 +7,120 @@
     }
 ]
 
+# queue num 4-5 fanout
+[
+    {
+        "queue": {
+            "flags": [
+                "fanout"
+            ],
+            "num": {
+                "range": [
+                    4,
+                    5
+                ]
+            }
+        }
+    }
+]
+
+# queue num 4-5 bypass
+[
+    {
+        "queue": {
+            "flags": [
+                "bypass"
+            ],
+            "num": {
+                "range": [
+                    4,
+                    5
+                ]
+            }
+        }
+    }
+]
+
+# queue flags bypass to numgen inc mod 65536
+[
+    {
+        "queue": {
+            "flags": [
+                "bypass"
+            ],
+            "num": {
+                "numgen": {
+                    "mod": 65536,
+                    "mode": "inc",
+                    "offset": 0
+                }
+            }
+        }
+    }
+]
+
+# queue flags bypass to 65535
+[
+    {
+        "queue": {
+            "flags": [
+                "bypass"
+            ],
+            "num": 65535
+        }
+    }
+]
+
+# queue flags bypass to 1-65535
+[
+    {
+        "queue": {
+            "flags": [
+                "bypass"
+            ],
+            "num": {
+                "range": [
+                    1,
+                    65535
+                ]
+            }
+        }
+    }
+]
+
+# queue flags bypass to oifname map { "eth0" : 0, "ppp0" : 2, "eth1" : 2 }
+[
+    {
+        "queue": {
+            "flags": [
+                "bypass"
+            ],
+            "num": {
+                "map": {
+                    "data": {
+                        "set": [
+                            [
+                                "eth0",
+                                0
+                            ],
+                            [
+                                "ppp0",
+                                2
+                            ],
+                            [
+                                "eth1",
+                                2
+                            ]
+                        ]
+                    },
+                    "key": {
+                        "meta": {
+                            "key": "oifname"
+                        }
+                    }
+                }
+            }
+        }
+    }
+]
+
diff --git a/tests/py/inet/fib.t.json b/tests/py/inet/fib.t.json
index 14a6249a..2bfe4f70 100644
--- a/tests/py/inet/fib.t.json
+++ b/tests/py/inet/fib.t.json
@@ -100,9 +100,7 @@
         "match": {
             "left": {
                 "fib": {
-                    "flags": [
-                        "daddr"
-                    ],
+                    "flags": "daddr",
                     "result": "check"
                 }
             },
@@ -118,9 +116,7 @@
         "match": {
             "left": {
                 "fib": {
-                    "flags": [
-                        "daddr"
-                    ],
+                    "flags": "daddr",
                     "result": "check"
                 }
             },
diff --git a/tests/py/inet/fib.t.json.output b/tests/py/inet/fib.t.json.output
index e8d01669..d3396dd2 100644
--- a/tests/py/inet/fib.t.json.output
+++ b/tests/py/inet/fib.t.json.output
@@ -43,7 +43,9 @@
         "match": {
             "left": {
                 "fib": {
-                    "flags": "daddr",
+                    "flags": [
+                        "daddr"
+                    ],
                     "result": "check"
                 }
             },
@@ -59,7 +61,9 @@
         "match": {
             "left": {
                 "fib": {
-                    "flags": "daddr",
+                    "flags": [
+                        "daddr"
+                    ],
                     "result": "check"
                 }
             },
@@ -69,3 +73,82 @@
     }
 ]
 
+# fib daddr check vmap { missing : drop, exists : accept }
+[
+    {
+        "vmap": {
+            "data": {
+                "set": [
+                    [
+                        false,
+                        {
+                            "drop": null
+                        }
+                    ],
+                    [
+                        true,
+                        {
+                            "accept": null
+                        }
+                    ]
+                ]
+            },
+            "key": {
+                "fib": {
+                    "flags": [
+                        "daddr"
+                    ],
+                    "result": "check"
+                }
+            }
+        }
+    }
+]
+
+# meta mark set fib daddr check . ct mark map { exists . 0x00000000 : 0x00000001 }
+[
+    {
+        "mangle": {
+            "key": {
+                "meta": {
+                    "key": "mark"
+                }
+            },
+            "value": {
+                "map": {
+                    "data": {
+                        "set": [
+                            [
+                                {
+                                    "concat": [
+                                        true,
+                                        0
+                                    ]
+                                },
+                                1
+                            ]
+                        ]
+                    },
+                    "key": {
+                        "concat": [
+                            {
+                                "fib": {
+                                    "flags": [
+                                        "daddr"
+                                    ],
+                                    "result": "check"
+                                }
+                            },
+                            {
+                                "ct": {
+                                    "key": "mark"
+                                }
+                            }
+                        ]
+                    }
+                }
+            }
+        }
+    }
+]
+
diff --git a/tests/py/inet/snat.t.json.output b/tests/py/inet/snat.t.json.output
new file mode 100644
index 00000000..5b958860
--- /dev/null
+++ b/tests/py/inet/snat.t.json.output
@@ -0,0 +1,22 @@
+# iifname "foo" masquerade random
+[
+    {
+        "match": {
+            "left": {
+                "meta": {
+                    "key": "iifname"
+                }
+            },
+            "op": "==",
+            "right": "foo"
+        }
+    },
+    {
+        "masquerade": {
+            "flags": [
+                "random"
+            ]
+        }
+    }
+]
+
diff --git a/tests/py/inet/synproxy.t.json b/tests/py/inet/synproxy.t.json
index 1dd85a61..b3cec094 100644
--- a/tests/py/inet/synproxy.t.json
+++ b/tests/py/inet/synproxy.t.json
@@ -19,9 +19,7 @@
 [
     {
         "synproxy": {
-            "flags": [
-                "timestamp"
-            ]
+            "flags": "timestamp"
         }
     }
 ]
@@ -56,9 +54,7 @@
 [
     {
         "synproxy": {
-            "flags": [
-                "sack-perm"
-            ]
+            "flags": "sack-perm"
         }
     }
 ]
diff --git a/tests/py/inet/synproxy.t.json.output b/tests/py/inet/synproxy.t.json.output
index e32cdfb8..a1d81bfe 100644
--- a/tests/py/inet/synproxy.t.json.output
+++ b/tests/py/inet/synproxy.t.json.output
@@ -2,7 +2,9 @@
 [
     {
         "synproxy": {
-            "flags": "timestamp"
+            "flags": [
+                "timestamp"
+            ]
         }
     }
 ]
@@ -11,7 +13,9 @@
 [
     {
         "synproxy": {
-            "flags": "sack-perm"
+            "flags": [
+                "sack-perm"
+            ]
         }
     }
 ]
diff --git a/tests/py/ip/masquerade.t.json.output b/tests/py/ip/masquerade.t.json.output
index 58e7e290..8ca5a426 100644
--- a/tests/py/ip/masquerade.t.json.output
+++ b/tests/py/ip/masquerade.t.json.output
@@ -121,3 +121,49 @@
     }
 ]
 
+# udp dport 53 masquerade random
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "dport",
+                    "protocol": "udp"
+                }
+            },
+            "op": "==",
+            "right": 53
+        }
+    },
+    {
+        "masquerade": {
+            "flags": [
+                "random"
+            ]
+        }
+    }
+]
+
+# udp dport 53 masquerade persistent
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "dport",
+                    "protocol": "udp"
+                }
+            },
+            "op": "==",
+            "right": 53
+        }
+    },
+    {
+        "masquerade": {
+            "flags": [
+                "persistent"
+            ]
+        }
+    }
+]
+
diff --git a/tests/py/ip/redirect.t.json.output b/tests/py/ip/redirect.t.json.output
index 4646c60a..09f1e48d 100644
--- a/tests/py/ip/redirect.t.json.output
+++ b/tests/py/ip/redirect.t.json.output
@@ -1,3 +1,49 @@
+# udp dport 53 redirect random
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "dport",
+                    "protocol": "udp"
+                }
+            },
+            "op": "==",
+            "right": 53
+        }
+    },
+    {
+        "redirect": {
+            "flags": [
+                "random"
+            ]
+        }
+    }
+]
+
+# udp dport 53 redirect persistent
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "dport",
+                    "protocol": "udp"
+                }
+            },
+            "op": "==",
+            "right": 53
+        }
+    },
+    {
+        "redirect": {
+            "flags": [
+                "persistent"
+            ]
+        }
+    }
+]
+
 # udp dport 53 redirect random,persistent,fully-random
 [
     {
@@ -144,3 +190,75 @@
     }
 ]
 
+# tcp dport 9128 redirect to :993 random
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "dport",
+                    "protocol": "tcp"
+                }
+            },
+            "op": "==",
+            "right": 9128
+        }
+    },
+    {
+        "redirect": {
+            "flags": [
+                "random"
+            ],
+            "port": 993
+        }
+    }
+]
+
+# tcp dport 9128 redirect to :993 fully-random
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "dport",
+                    "protocol": "tcp"
+                }
+            },
+            "op": "==",
+            "right": 9128
+        }
+    },
+    {
+        "redirect": {
+            "flags": [
+                "fully-random"
+            ],
+            "port": 993
+        }
+    }
+]
+
+# tcp dport 9128 redirect to :123 persistent
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "dport",
+                    "protocol": "tcp"
+                }
+            },
+            "op": "==",
+            "right": 9128
+        }
+    },
+    {
+        "redirect": {
+            "flags": [
+                "persistent"
+            ],
+            "port": 123
+        }
+    }
+]
+
diff --git a/tests/py/ip/snat.t.json.output b/tests/py/ip/snat.t.json.output
index 2a997801..19eba256 100644
--- a/tests/py/ip/snat.t.json.output
+++ b/tests/py/ip/snat.t.json.output
@@ -241,8 +241,12 @@
                 }
             },
             "family": "ip",
-            "flags": "netmap",
-            "type_flags": "prefix"
+            "flags": [
+                "netmap"
+            ],
+            "type_flags": [
+                "prefix"
+            ]
         }
     }
 ]
diff --git a/tests/py/ip6/masquerade.t.json.output b/tests/py/ip6/masquerade.t.json.output
index 31d0cd9a..21ed4f63 100644
--- a/tests/py/ip6/masquerade.t.json.output
+++ b/tests/py/ip6/masquerade.t.json.output
@@ -96,3 +96,49 @@
     }
 ]
 
+# udp dport 53 masquerade random
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "dport",
+                    "protocol": "udp"
+                }
+            },
+            "op": "==",
+            "right": 53
+        }
+    },
+    {
+        "masquerade": {
+            "flags": [
+                "random"
+            ]
+        }
+    }
+]
+
+# udp dport 53 masquerade persistent
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "dport",
+                    "protocol": "udp"
+                }
+            },
+            "op": "==",
+            "right": 53
+        }
+    },
+    {
+        "masquerade": {
+            "flags": [
+                "persistent"
+            ]
+        }
+    }
+]
+
diff --git a/tests/py/ip6/redirect.t.json.output b/tests/py/ip6/redirect.t.json.output
index 0174cc7d..69c7b03d 100644
--- a/tests/py/ip6/redirect.t.json.output
+++ b/tests/py/ip6/redirect.t.json.output
@@ -144,3 +144,73 @@
     }
 ]
 
+# udp dport 53 redirect random
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "dport",
+                    "protocol": "udp"
+                }
+            },
+            "op": "==",
+            "right": 53
+        }
+    },
+    {
+        "redirect": {
+            "flags": [
+                "random"
+            ]
+        }
+    }
+]
+
+# udp dport 53 redirect persistent
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "dport",
+                    "protocol": "udp"
+                }
+            },
+            "op": "==",
+            "right": 53
+        }
+    },
+    {
+        "redirect": {
+            "flags": [
+                "persistent"
+            ]
+        }
+    }
+]
+
+# tcp dport 9128 redirect to :993 random
+[
+    {
+        "match": {
+            "left": {
+                "payload": {
+                    "field": "dport",
+                    "protocol": "tcp"
+                }
+            },
+            "op": "==",
+            "right": 9128
+        }
+    },
+    {
+        "redirect": {
+            "flags": [
+                "random"
+            ],
+            "port": 993
+        }
+    }
+]
+
diff --git a/tests/shell/testcases/cache/dumps/0002_interval_0.json-nft b/tests/shell/testcases/cache/dumps/0002_interval_0.json-nft
index 5e2b9b42..fa15d658 100644
--- a/tests/shell/testcases/cache/dumps/0002_interval_0.json-nft
+++ b/tests/shell/testcases/cache/dumps/0002_interval_0.json-nft
@@ -21,7 +21,9 @@
         "table": "t",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "prefix": {
diff --git a/tests/shell/testcases/chains/dumps/netdev_chain_dormant_autoremove.json-nft b/tests/shell/testcases/chains/dumps/netdev_chain_dormant_autoremove.json-nft
index 9151d42f..7f1c76c9 100644
--- a/tests/shell/testcases/chains/dumps/netdev_chain_dormant_autoremove.json-nft
+++ b/tests/shell/testcases/chains/dumps/netdev_chain_dormant_autoremove.json-nft
@@ -12,7 +12,9 @@
         "family": "netdev",
         "name": "test",
         "handle": 0,
-        "flags": "dormant"
+        "flags": [
+          "dormant"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/json/dumps/0001set_statements_0.json-nft b/tests/shell/testcases/json/dumps/0001set_statements_0.json-nft
index ecc7eade..91db43e2 100644
--- a/tests/shell/testcases/json/dumps/0001set_statements_0.json-nft
+++ b/tests/shell/testcases/json/dumps/0001set_statements_0.json-nft
@@ -34,7 +34,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "size": 65535,
-        "flags": "dynamic"
+        "flags": [
+          "dynamic"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/json/single_flag b/tests/shell/testcases/json/single_flag
index f0a608ad..1d70f249 100755
--- a/tests/shell/testcases/json/single_flag
+++ b/tests/shell/testcases/json/single_flag
@@ -47,10 +47,10 @@ JSON_TABLE_1='{"nftables": [{"table": {"family": "ip", "name": "t", "handle": 0,
 JSON_TABLE_1_EQUIV=$(sed 's/\("flags":\) \([^}]*\)/\1 [\2]/' <<< "$JSON_TABLE_1")
 
 STD_TABLE_2=$(sed 's/\(flags dormant\)/\1,persist/' <<< "$STD_TABLE_1")
-JSON_TABLE_2=$(sed 's/\("flags":\) \("dormant"\)/\1 [\2, "persist"]/' <<< "$JSON_TABLE_1")
+JSON_TABLE_2=$(sed 's/\("dormant"\)/\1, "persist"/' <<< "$JSON_TABLE_1_EQUIV")
 
-back_n_forth "$STD_TABLE_1" "$JSON_TABLE_1"
-json_equiv "$JSON_TABLE_1_EQUIV" "$JSON_TABLE_1"
+back_n_forth "$STD_TABLE_1" "$JSON_TABLE_1_EQUIV"
+json_equiv "$JSON_TABLE_1" "$JSON_TABLE_1_EQUIV"
 back_n_forth "$STD_TABLE_2" "$JSON_TABLE_2"
 
 #
@@ -67,10 +67,10 @@ JSON_SET_1='{"nftables": [{"table": {"family": "ip", "name": "t", "handle": 0}},
 JSON_SET_1_EQUIV=$(sed 's/\("flags":\) \([^}]*\)/\1 [\2]/' <<< "$JSON_SET_1")
 
 STD_SET_2=$(sed 's/\(flags interval\)/\1,timeout/' <<< "$STD_SET_1")
-JSON_SET_2=$(sed 's/\("flags":\) \("interval"\)/\1 [\2, "timeout"]/' <<< "$JSON_SET_1")
+JSON_SET_2=$(sed 's/\("interval"\)/\1, "timeout"/' <<< "$JSON_SET_1_EQUIV")
 
-back_n_forth "$STD_SET_1" "$JSON_SET_1"
-json_equiv "$JSON_SET_1_EQUIV" "$JSON_SET_1"
+back_n_forth "$STD_SET_1" "$JSON_SET_1_EQUIV"
+json_equiv "$JSON_SET_1" "$JSON_SET_1_EQUIV"
 back_n_forth "$STD_SET_2" "$JSON_SET_2"
 
 #
@@ -86,10 +86,10 @@ JSON_FIB_1='{"nftables": [{"table": {"family": "ip", "name": "t", "handle": 0}},
 JSON_FIB_1_EQUIV=$(sed 's/\("flags":\) \([^}]*\)/\1 [\2]/' <<< "$JSON_FIB_1")
 
 STD_FIB_2=$(sed 's/\(fib saddr\)/\1 . iif/' <<< "$STD_FIB_1")
-JSON_FIB_2=$(sed 's/\("flags":\) \("saddr"\)/\1 [\2, "iif"]/' <<< "$JSON_FIB_1")
+JSON_FIB_2=$(sed 's/\("saddr"\)/\1, "iif"/' <<< "$JSON_FIB_1_EQUIV")
 
-back_n_forth "$STD_FIB_1" "$JSON_FIB_1"
-json_equiv "$JSON_FIB_1_EQUIV" "$JSON_FIB_1"
+back_n_forth "$STD_FIB_1" "$JSON_FIB_1_EQUIV"
+json_equiv "$JSON_FIB_1" "$JSON_FIB_1_EQUIV"
 back_n_forth "$STD_FIB_2" "$JSON_FIB_2"
 
 #
@@ -105,10 +105,10 @@ JSON_NAT_1='{"nftables": [{"table": {"family": "ip", "name": "t", "handle": 0}},
 JSON_NAT_1_EQUIV=$(sed 's/\("flags":\) \([^}]*\)/\1 [\2]/' <<< "$JSON_NAT_1")
 
 STD_NAT_2=$(sed 's/\(persistent\)/random,\1/' <<< "$STD_NAT_1")
-JSON_NAT_2=$(sed 's/\("flags":\) \("persistent"\)/\1 ["random", \2]/' <<< "$JSON_NAT_1")
+JSON_NAT_2=$(sed 's/\("persistent"\)/"random", \1/' <<< "$JSON_NAT_1_EQUIV")
 
-back_n_forth "$STD_NAT_1" "$JSON_NAT_1"
-json_equiv "$JSON_NAT_1_EQUIV" "$JSON_NAT_1"
+back_n_forth "$STD_NAT_1" "$JSON_NAT_1_EQUIV"
+json_equiv "$JSON_NAT_1" "$JSON_NAT_1_EQUIV"
 back_n_forth "$STD_NAT_2" "$JSON_NAT_2"
 
 #
@@ -124,10 +124,10 @@ JSON_LOG_1='{"nftables": [{"table": {"family": "ip", "name": "t", "handle": 0}},
 JSON_LOG_1_EQUIV=$(sed 's/\("flags":\) \([^}]*\)/\1 [\2]/' <<< "$JSON_LOG_1")
 
 STD_LOG_2=$(sed 's/\(tcp sequence\)/\1,options/' <<< "$STD_LOG_1")
-JSON_LOG_2=$(sed 's/\("flags":\) \("tcp sequence"\)/\1 [\2, "tcp options"]/' <<< "$JSON_LOG_1")
+JSON_LOG_2=$(sed 's/\("tcp sequence"\)/\1, "tcp options"/' <<< "$JSON_LOG_1_EQUIV")
 
-back_n_forth "$STD_LOG_1" "$JSON_LOG_1"
-json_equiv "$JSON_LOG_1_EQUIV" "$JSON_LOG_1"
+back_n_forth "$STD_LOG_1" "$JSON_LOG_1_EQUIV"
+json_equiv "$JSON_LOG_1" "$JSON_LOG_1_EQUIV"
 back_n_forth "$STD_LOG_2" "$JSON_LOG_2"
 
 #
@@ -143,10 +143,10 @@ JSON_SYNPROXY_1='{"nftables": [{"table": {"family": "ip", "name": "t", "handle":
 JSON_SYNPROXY_1_EQUIV=$(sed 's/\("flags":\) \([^}]*\)/\1 [\2]/' <<< "$JSON_SYNPROXY_1")
 
 STD_SYNPROXY_2=$(sed 's/\(sack-perm\)/timestamp \1/' <<< "$STD_SYNPROXY_1")
-JSON_SYNPROXY_2=$(sed 's/\("flags":\) \("sack-perm"\)/\1 ["timestamp", \2]/' <<< "$JSON_SYNPROXY_1")
+JSON_SYNPROXY_2=$(sed 's/\("sack-perm"\)/"timestamp", \1/' <<< "$JSON_SYNPROXY_1_EQUIV")
 
-back_n_forth "$STD_SYNPROXY_1" "$JSON_SYNPROXY_1"
-json_equiv "$JSON_SYNPROXY_1_EQUIV" "$JSON_SYNPROXY_1"
+back_n_forth "$STD_SYNPROXY_1" "$JSON_SYNPROXY_1_EQUIV"
+json_equiv "$JSON_SYNPROXY_1" "$JSON_SYNPROXY_1_EQUIV"
 back_n_forth "$STD_SYNPROXY_2" "$JSON_SYNPROXY_2"
 
 #
@@ -164,10 +164,10 @@ JSON_SYNPROXY_OBJ_1='{"nftables": [{"table": {"family": "ip", "name": "t", "hand
 JSON_SYNPROXY_OBJ_1_EQUIV=$(sed 's/\("flags":\) \([^}]*\)/\1 [\2]/' <<< "$JSON_SYNPROXY_OBJ_1")
 
 STD_SYNPROXY_OBJ_2=$(sed 's/ \(sack-perm\)/timestamp \1/' <<< "$STD_SYNPROXY_OBJ_1")
-JSON_SYNPROXY_OBJ_2=$(sed 's/\("flags":\) \("sack-perm"\)/\1 ["timestamp", \2]/' <<< "$JSON_SYNPROXY_OBJ_1")
+JSON_SYNPROXY_OBJ_2=$(sed 's/\("sack-perm"\)/"timestamp", \1/' <<< "$JSON_SYNPROXY_OBJ_1_EQUIV")
 
-back_n_forth "$STD_SYNPROXY_OBJ_1" "$JSON_SYNPROXY_OBJ_1"
-json_equiv "$JSON_SYNPROXY_OBJ_1_EQUIV" "$JSON_SYNPROXY_OBJ_1"
+back_n_forth "$STD_SYNPROXY_OBJ_1" "$JSON_SYNPROXY_OBJ_1_EQUIV"
+json_equiv "$JSON_SYNPROXY_OBJ_1" "$JSON_SYNPROXY_OBJ_1_EQUIV"
 back_n_forth "$STD_SYNPROXY_OBJ_2" "$JSON_SYNPROXY_OBJ_2"
 
 #
@@ -183,8 +183,8 @@ JSON_QUEUE_1='{"nftables": [{"table": {"family": "ip", "name": "t", "handle": 0}
 JSON_QUEUE_1_EQUIV=$(sed 's/\("flags":\) \([^}]*\)/\1 [\2]/' <<< "$JSON_QUEUE_1")
 
 STD_QUEUE_2=$(sed 's/\(bypass\)/\1,fanout/' <<< "$STD_QUEUE_1")
-JSON_QUEUE_2=$(sed 's/\("flags":\) \("bypass"\)/\1 [\2, "fanout"]/' <<< "$JSON_QUEUE_1")
+JSON_QUEUE_2=$(sed 's/\("bypass"\)/\1, "fanout"/' <<< "$JSON_QUEUE_1_EQUIV")
 
-back_n_forth "$STD_QUEUE_1" "$JSON_QUEUE_1"
-json_equiv "$JSON_QUEUE_1_EQUIV" "$JSON_QUEUE_1"
+back_n_forth "$STD_QUEUE_1" "$JSON_QUEUE_1_EQUIV"
+json_equiv "$JSON_QUEUE_1" "$JSON_QUEUE_1_EQUIV"
 back_n_forth "$STD_QUEUE_2" "$JSON_QUEUE_2"
diff --git a/tests/shell/testcases/listing/dumps/0010sets_0.json-nft b/tests/shell/testcases/listing/dumps/0010sets_0.json-nft
index 6aa99b4e..efca892e 100644
--- a/tests/shell/testcases/listing/dumps/0010sets_0.json-nft
+++ b/tests/shell/testcases/listing/dumps/0010sets_0.json-nft
@@ -62,7 +62,9 @@
         "table": "test_arp",
         "type": "inet_service",
         "handle": 0,
-        "flags": "constant"
+        "flags": [
+          "constant"
+        ]
       }
     },
     {
@@ -104,7 +106,9 @@
         "table": "filter",
         "type": "inet_service",
         "handle": 0,
-        "flags": "constant"
+        "flags": [
+          "constant"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/listing/dumps/0012sets_0.json-nft b/tests/shell/testcases/listing/dumps/0012sets_0.json-nft
index 6aa99b4e..efca892e 100644
--- a/tests/shell/testcases/listing/dumps/0012sets_0.json-nft
+++ b/tests/shell/testcases/listing/dumps/0012sets_0.json-nft
@@ -62,7 +62,9 @@
         "table": "test_arp",
         "type": "inet_service",
         "handle": 0,
-        "flags": "constant"
+        "flags": [
+          "constant"
+        ]
       }
     },
     {
@@ -104,7 +106,9 @@
         "table": "filter",
         "type": "inet_service",
         "handle": 0,
-        "flags": "constant"
+        "flags": [
+          "constant"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/listing/dumps/0022terse_0.json-nft b/tests/shell/testcases/listing/dumps/0022terse_0.json-nft
index 1a33d688..bd6383da 100644
--- a/tests/shell/testcases/listing/dumps/0022terse_0.json-nft
+++ b/tests/shell/testcases/listing/dumps/0022terse_0.json-nft
@@ -33,7 +33,9 @@
         "table": "filter",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           "10.10.10.10",
           "10.10.11.11"
diff --git a/tests/shell/testcases/maps/dumps/0005interval_map_add_many_elements_0.json-nft b/tests/shell/testcases/maps/dumps/0005interval_map_add_many_elements_0.json-nft
index f9ac5bce..d1a46295 100644
--- a/tests/shell/testcases/maps/dumps/0005interval_map_add_many_elements_0.json-nft
+++ b/tests/shell/testcases/maps/dumps/0005interval_map_add_many_elements_0.json-nft
@@ -22,7 +22,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "map": "ipv4_addr",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             {
diff --git a/tests/shell/testcases/maps/dumps/0006interval_map_overlap_0.json-nft b/tests/shell/testcases/maps/dumps/0006interval_map_overlap_0.json-nft
index d6b32d0f..1e983219 100644
--- a/tests/shell/testcases/maps/dumps/0006interval_map_overlap_0.json-nft
+++ b/tests/shell/testcases/maps/dumps/0006interval_map_overlap_0.json-nft
@@ -22,7 +22,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "map": "ipv4_addr",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             {
diff --git a/tests/shell/testcases/maps/dumps/0008interval_map_delete_0.json-nft b/tests/shell/testcases/maps/dumps/0008interval_map_delete_0.json-nft
index 09cb6c85..bd3c6cc7 100644
--- a/tests/shell/testcases/maps/dumps/0008interval_map_delete_0.json-nft
+++ b/tests/shell/testcases/maps/dumps/0008interval_map_delete_0.json-nft
@@ -34,7 +34,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "map": "mark",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             "127.0.0.2",
diff --git a/tests/shell/testcases/maps/dumps/0012map_concat_0.json-nft b/tests/shell/testcases/maps/dumps/0012map_concat_0.json-nft
index 85384c53..88bf4984 100644
--- a/tests/shell/testcases/maps/dumps/0012map_concat_0.json-nft
+++ b/tests/shell/testcases/maps/dumps/0012map_concat_0.json-nft
@@ -50,7 +50,9 @@
         },
         "handle": 0,
         "map": "verdict",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             {
diff --git a/tests/shell/testcases/maps/dumps/0013map_0.json-nft b/tests/shell/testcases/maps/dumps/0013map_0.json-nft
index 2c8d21b4..e91a269d 100644
--- a/tests/shell/testcases/maps/dumps/0013map_0.json-nft
+++ b/tests/shell/testcases/maps/dumps/0013map_0.json-nft
@@ -38,7 +38,9 @@
         ],
         "handle": 0,
         "map": "verdict",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             {
diff --git a/tests/shell/testcases/maps/dumps/delete_element.json-nft b/tests/shell/testcases/maps/dumps/delete_element.json-nft
index 69a0d3a2..3b7c5f24 100644
--- a/tests/shell/testcases/maps/dumps/delete_element.json-nft
+++ b/tests/shell/testcases/maps/dumps/delete_element.json-nft
@@ -40,7 +40,9 @@
         },
         "handle": 0,
         "map": "classid",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             {
diff --git a/tests/shell/testcases/maps/dumps/delete_element_catchall.json-nft b/tests/shell/testcases/maps/dumps/delete_element_catchall.json-nft
index 65053f2c..48b183f1 100644
--- a/tests/shell/testcases/maps/dumps/delete_element_catchall.json-nft
+++ b/tests/shell/testcases/maps/dumps/delete_element_catchall.json-nft
@@ -40,7 +40,9 @@
         },
         "handle": 0,
         "map": "classid",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             "*",
diff --git a/tests/shell/testcases/maps/dumps/map_with_flags_0.json-nft b/tests/shell/testcases/maps/dumps/map_with_flags_0.json-nft
index 94ec5f75..97b7e94e 100644
--- a/tests/shell/testcases/maps/dumps/map_with_flags_0.json-nft
+++ b/tests/shell/testcases/maps/dumps/map_with_flags_0.json-nft
@@ -22,7 +22,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "map": "ipv4_addr",
-        "flags": "timeout"
+        "flags": [
+          "timeout"
+        ]
       }
     }
   ]
diff --git a/tests/shell/testcases/maps/dumps/named_ct_objects.json-nft b/tests/shell/testcases/maps/dumps/named_ct_objects.json-nft
index 5258d87c..c0f270e3 100644
--- a/tests/shell/testcases/maps/dumps/named_ct_objects.json-nft
+++ b/tests/shell/testcases/maps/dumps/named_ct_objects.json-nft
@@ -111,7 +111,9 @@
         },
         "handle": 0,
         "map": "ct expectation",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             {
@@ -140,7 +142,9 @@
         },
         "handle": 0,
         "map": "ct helper",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             {
diff --git a/tests/shell/testcases/maps/dumps/named_limits.json-nft b/tests/shell/testcases/maps/dumps/named_limits.json-nft
index 07e28929..3c6845ac 100644
--- a/tests/shell/testcases/maps/dumps/named_limits.json-nft
+++ b/tests/shell/testcases/maps/dumps/named_limits.json-nft
@@ -144,7 +144,9 @@
         },
         "handle": 0,
         "map": "limit",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             {
@@ -284,7 +286,9 @@
         },
         "handle": 0,
         "map": "limit",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             {
diff --git a/tests/shell/testcases/maps/dumps/pipapo_double_flush.json-nft b/tests/shell/testcases/maps/dumps/pipapo_double_flush.json-nft
index dc793a65..ef8c3930 100644
--- a/tests/shell/testcases/maps/dumps/pipapo_double_flush.json-nft
+++ b/tests/shell/testcases/maps/dumps/pipapo_double_flush.json-nft
@@ -33,7 +33,9 @@
         ],
         "handle": 0,
         "map": "verdict",
-        "flags": "interval"
+        "flags": [
+          "interval"
+        ]
       }
     }
   ]
diff --git a/tests/shell/testcases/maps/dumps/typeof_integer_0.json-nft b/tests/shell/testcases/maps/dumps/typeof_integer_0.json-nft
index 8dea5c17..1df729b4 100644
--- a/tests/shell/testcases/maps/dumps/typeof_integer_0.json-nft
+++ b/tests/shell/testcases/maps/dumps/typeof_integer_0.json-nft
@@ -48,7 +48,9 @@
         },
         "handle": 0,
         "map": "verdict",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             {
diff --git a/tests/shell/testcases/maps/dumps/typeof_maps_add_delete.json-nft b/tests/shell/testcases/maps/dumps/typeof_maps_add_delete.json-nft
index 8b18a78d..effe02dc 100644
--- a/tests/shell/testcases/maps/dumps/typeof_maps_add_delete.json-nft
+++ b/tests/shell/testcases/maps/dumps/typeof_maps_add_delete.json-nft
@@ -50,7 +50,9 @@
         "handle": 0,
         "map": "mark",
         "size": 64,
-        "flags": "timeout",
+        "flags": [
+          "timeout"
+        ],
         "timeout": 300,
         "stmt": [
           {
diff --git a/tests/shell/testcases/maps/dumps/typeof_maps_update_0.json-nft b/tests/shell/testcases/maps/dumps/typeof_maps_update_0.json-nft
index b79237d0..73151466 100644
--- a/tests/shell/testcases/maps/dumps/typeof_maps_update_0.json-nft
+++ b/tests/shell/testcases/maps/dumps/typeof_maps_update_0.json-nft
@@ -39,7 +39,9 @@
         "handle": 0,
         "map": "mark",
         "size": 65535,
-        "flags": "timeout",
+        "flags": [
+          "timeout"
+        ],
         "timeout": 360
       }
     },
@@ -59,7 +61,9 @@
         "handle": 0,
         "map": "mark",
         "size": 65535,
-        "flags": "timeout",
+        "flags": [
+          "timeout"
+        ],
         "timeout": 60
       }
     },
diff --git a/tests/shell/testcases/maps/dumps/vmap_timeout.json-nft b/tests/shell/testcases/maps/dumps/vmap_timeout.json-nft
index 2d7d8cc2..71e9a9ee 100644
--- a/tests/shell/testcases/maps/dumps/vmap_timeout.json-nft
+++ b/tests/shell/testcases/maps/dumps/vmap_timeout.json-nft
@@ -66,7 +66,9 @@
         "type": "inet_service",
         "handle": 0,
         "map": "verdict",
-        "flags": "timeout",
+        "flags": [
+          "timeout"
+        ],
         "gc-interval": 10,
         "elem": [
           [
@@ -105,7 +107,9 @@
         },
         "handle": 0,
         "map": "verdict",
-        "flags": "timeout",
+        "flags": [
+          "timeout"
+        ],
         "gc-interval": 10,
         "elem": [
           [
diff --git a/tests/shell/testcases/maps/dumps/vmap_unary.json-nft b/tests/shell/testcases/maps/dumps/vmap_unary.json-nft
index 08583f9b..df0a07d9 100644
--- a/tests/shell/testcases/maps/dumps/vmap_unary.json-nft
+++ b/tests/shell/testcases/maps/dumps/vmap_unary.json-nft
@@ -51,7 +51,9 @@
         },
         "handle": 0,
         "map": "verdict",
-        "flags": "interval"
+        "flags": [
+          "interval"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/nft-f/dumps/0012different_defines_0.json-nft b/tests/shell/testcases/nft-f/dumps/0012different_defines_0.json-nft
index 1b2e3420..0e7ea228 100644
--- a/tests/shell/testcases/nft-f/dumps/0012different_defines_0.json-nft
+++ b/tests/shell/testcases/nft-f/dumps/0012different_defines_0.json-nft
@@ -529,7 +529,9 @@
           {
             "queue": {
               "num": 0,
-              "flags": "bypass"
+              "flags": [
+                "bypass"
+              ]
             }
           }
         ]
@@ -768,7 +770,9 @@
                   }
                 }
               },
-              "flags": "bypass"
+              "flags": [
+                "bypass"
+              ]
             }
           }
         ]
diff --git a/tests/shell/testcases/nft-f/dumps/0025empty_dynset_0.json-nft b/tests/shell/testcases/nft-f/dumps/0025empty_dynset_0.json-nft
index 63d67641..0cde23b0 100644
--- a/tests/shell/testcases/nft-f/dumps/0025empty_dynset_0.json-nft
+++ b/tests/shell/testcases/nft-f/dumps/0025empty_dynset_0.json-nft
@@ -27,7 +27,9 @@
           "inet_service"
         ],
         "handle": 0,
-        "flags": "dynamic",
+        "flags": [
+          "dynamic"
+        ],
         "elem": [
           {
             "elem": {
@@ -62,7 +64,9 @@
           "inet_service"
         ],
         "handle": 0,
-        "flags": "dynamic"
+        "flags": [
+          "dynamic"
+        ]
       }
     },
     {
@@ -78,7 +82,9 @@
           "inet_service"
         ],
         "handle": 0,
-        "flags": "dynamic",
+        "flags": [
+          "dynamic"
+        ],
         "elem": [
           {
             "elem": {
diff --git a/tests/shell/testcases/nft-i/dumps/set_0.json-nft b/tests/shell/testcases/nft-i/dumps/set_0.json-nft
index 61e4b99e..da3456ef 100644
--- a/tests/shell/testcases/nft-i/dumps/set_0.json-nft
+++ b/tests/shell/testcases/nft-i/dumps/set_0.json-nft
@@ -21,7 +21,9 @@
         "table": "foo",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           "10.1.1.1",
           "10.1.1.2"
diff --git a/tests/shell/testcases/optimizations/dumps/merge_vmaps.json-nft b/tests/shell/testcases/optimizations/dumps/merge_vmaps.json-nft
index f058d6f1..e87f1c4c 100644
--- a/tests/shell/testcases/optimizations/dumps/merge_vmaps.json-nft
+++ b/tests/shell/testcases/optimizations/dumps/merge_vmaps.json-nft
@@ -46,7 +46,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "size": 65535,
-        "flags": "dynamic"
+        "flags": [
+          "dynamic"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/optimizations/dumps/skip_unsupported.json-nft b/tests/shell/testcases/optimizations/dumps/skip_unsupported.json-nft
index bf5a8cec..d6347b1e 100644
--- a/tests/shell/testcases/optimizations/dumps/skip_unsupported.json-nft
+++ b/tests/shell/testcases/optimizations/dumps/skip_unsupported.json-nft
@@ -29,7 +29,9 @@
         "table": "x",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "prefix": {
diff --git a/tests/shell/testcases/packetpath/dumps/set_lookups.json-nft b/tests/shell/testcases/packetpath/dumps/set_lookups.json-nft
index 23f4b17f..bcf6914e 100644
--- a/tests/shell/testcases/packetpath/dumps/set_lookups.json-nft
+++ b/tests/shell/testcases/packetpath/dumps/set_lookups.json-nft
@@ -36,7 +36,9 @@
           "iface_index"
         ],
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "concat": [
@@ -111,7 +113,9 @@
         "table": "t",
         "type": "iface_index",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           "lo"
         ]
diff --git a/tests/shell/testcases/rule_management/dumps/0004replace_0.json-nft b/tests/shell/testcases/rule_management/dumps/0004replace_0.json-nft
index 811cb738..767e80f1 100644
--- a/tests/shell/testcases/rule_management/dumps/0004replace_0.json-nft
+++ b/tests/shell/testcases/rule_management/dumps/0004replace_0.json-nft
@@ -38,7 +38,9 @@
         "table": "t",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval"
+        "flags": [
+          "interval"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/rule_management/dumps/0011reset_0.json-nft b/tests/shell/testcases/rule_management/dumps/0011reset_0.json-nft
index e57dee79..bc242467 100644
--- a/tests/shell/testcases/rule_management/dumps/0011reset_0.json-nft
+++ b/tests/shell/testcases/rule_management/dumps/0011reset_0.json-nft
@@ -38,7 +38,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "size": 65535,
-        "flags": "dynamic",
+        "flags": [
+          "dynamic"
+        ],
         "elem": [
           {
             "elem": {
diff --git a/tests/shell/testcases/sets/dumps/0001named_interval_0.json-nft b/tests/shell/testcases/sets/dumps/0001named_interval_0.json-nft
index 9200154a..b9c66a21 100644
--- a/tests/shell/testcases/sets/dumps/0001named_interval_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0001named_interval_0.json-nft
@@ -29,7 +29,9 @@
         "table": "t",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "range": [
@@ -53,7 +55,9 @@
         "table": "t",
         "type": "ipv6_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "prefix": {
@@ -77,7 +81,9 @@
         "table": "t",
         "type": "inet_proto",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "range": [
@@ -101,7 +107,9 @@
         "table": "t",
         "type": "inet_service",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "range": [
diff --git a/tests/shell/testcases/sets/dumps/0002named_interval_automerging_0.json-nft b/tests/shell/testcases/sets/dumps/0002named_interval_automerging_0.json-nft
index b083ecb5..4c0be670 100644
--- a/tests/shell/testcases/sets/dumps/0002named_interval_automerging_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0002named_interval_automerging_0.json-nft
@@ -21,7 +21,9 @@
         "table": "t",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "prefix": {
diff --git a/tests/shell/testcases/sets/dumps/0004named_interval_shadow_0.json-nft b/tests/shell/testcases/sets/dumps/0004named_interval_shadow_0.json-nft
index c79d9ba8..c55858fa 100644
--- a/tests/shell/testcases/sets/dumps/0004named_interval_shadow_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0004named_interval_shadow_0.json-nft
@@ -21,7 +21,9 @@
         "table": "t",
         "type": "ipv6_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "prefix": {
diff --git a/tests/shell/testcases/sets/dumps/0005named_interval_shadow_0.json-nft b/tests/shell/testcases/sets/dumps/0005named_interval_shadow_0.json-nft
index 464661e6..a75681f3 100644
--- a/tests/shell/testcases/sets/dumps/0005named_interval_shadow_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0005named_interval_shadow_0.json-nft
@@ -21,7 +21,9 @@
         "table": "t",
         "type": "ipv6_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "prefix": {
diff --git a/tests/shell/testcases/sets/dumps/0008comments_interval_0.json-nft b/tests/shell/testcases/sets/dumps/0008comments_interval_0.json-nft
index e7152413..c6f5aa68 100644
--- a/tests/shell/testcases/sets/dumps/0008comments_interval_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0008comments_interval_0.json-nft
@@ -21,7 +21,9 @@
         "table": "t",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "elem": {
diff --git a/tests/shell/testcases/sets/dumps/0009comments_timeout_0.json-nft b/tests/shell/testcases/sets/dumps/0009comments_timeout_0.json-nft
index a67a0670..2418b39a 100644
--- a/tests/shell/testcases/sets/dumps/0009comments_timeout_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0009comments_timeout_0.json-nft
@@ -21,7 +21,9 @@
         "table": "t",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "timeout",
+        "flags": [
+          "timeout"
+        ],
         "elem": [
           {
             "elem": {
diff --git a/tests/shell/testcases/sets/dumps/0015rulesetflush_0.json-nft b/tests/shell/testcases/sets/dumps/0015rulesetflush_0.json-nft
index 86d7eb6a..6268e216 100644
--- a/tests/shell/testcases/sets/dumps/0015rulesetflush_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0015rulesetflush_0.json-nft
@@ -36,7 +36,9 @@
         "table": "filter",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "prefix": {
diff --git a/tests/shell/testcases/sets/dumps/0022type_selective_flush_0.json-nft b/tests/shell/testcases/sets/dumps/0022type_selective_flush_0.json-nft
index dcb62eb7..c6171392 100644
--- a/tests/shell/testcases/sets/dumps/0022type_selective_flush_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0022type_selective_flush_0.json-nft
@@ -49,7 +49,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "size": 1024,
-        "flags": "dynamic"
+        "flags": [
+          "dynamic"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/sets/dumps/0024synproxy_0.json-nft b/tests/shell/testcases/sets/dumps/0024synproxy_0.json-nft
index dd71bb39..0af61333 100644
--- a/tests/shell/testcases/sets/dumps/0024synproxy_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0024synproxy_0.json-nft
@@ -58,7 +58,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "map": "synproxy",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             {
diff --git a/tests/shell/testcases/sets/dumps/0027ipv6_maps_ipv4_0.json-nft b/tests/shell/testcases/sets/dumps/0027ipv6_maps_ipv4_0.json-nft
index 75d8b46d..b9251ffa 100644
--- a/tests/shell/testcases/sets/dumps/0027ipv6_maps_ipv4_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0027ipv6_maps_ipv4_0.json-nft
@@ -21,7 +21,9 @@
         "table": "t",
         "type": "ipv6_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "prefix": {
diff --git a/tests/shell/testcases/sets/dumps/0028autoselect_0.json-nft b/tests/shell/testcases/sets/dumps/0028autoselect_0.json-nft
index 05fc072c..5968b2e0 100644
--- a/tests/shell/testcases/sets/dumps/0028autoselect_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0028autoselect_0.json-nft
@@ -34,7 +34,9 @@
         "type": "inet_proto",
         "handle": 0,
         "size": 65535,
-        "flags": "dynamic"
+        "flags": [
+          "dynamic"
+        ]
       }
     },
     {
@@ -45,7 +47,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "size": 65535,
-        "flags": "dynamic"
+        "flags": [
+          "dynamic"
+        ]
       }
     },
     {
@@ -56,7 +60,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "size": 1024,
-        "flags": "dynamic"
+        "flags": [
+          "dynamic"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/sets/dumps/0028delete_handle_0.json-nft b/tests/shell/testcases/sets/dumps/0028delete_handle_0.json-nft
index 9e5f708d..96314141 100644
--- a/tests/shell/testcases/sets/dumps/0028delete_handle_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0028delete_handle_0.json-nft
@@ -30,7 +30,9 @@
         "table": "test-ip",
         "type": "inet_service",
         "handle": 0,
-        "flags": "timeout",
+        "flags": [
+          "timeout"
+        ],
         "timeout": 10845
       }
     },
diff --git a/tests/shell/testcases/sets/dumps/0032restore_set_simple_0.json-nft b/tests/shell/testcases/sets/dumps/0032restore_set_simple_0.json-nft
index 7a723150..4d194bff 100644
--- a/tests/shell/testcases/sets/dumps/0032restore_set_simple_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0032restore_set_simple_0.json-nft
@@ -25,7 +25,9 @@
           "ipv4_addr"
         ],
         "handle": 0,
-        "flags": "timeout"
+        "flags": [
+          "timeout"
+        ]
       }
     },
     {
@@ -38,7 +40,9 @@
           "inet_service"
         ],
         "handle": 0,
-        "flags": "timeout"
+        "flags": [
+          "timeout"
+        ]
       }
     }
   ]
diff --git a/tests/shell/testcases/sets/dumps/0033add_set_simple_flat_0.json-nft b/tests/shell/testcases/sets/dumps/0033add_set_simple_flat_0.json-nft
index 56976528..16684438 100644
--- a/tests/shell/testcases/sets/dumps/0033add_set_simple_flat_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0033add_set_simple_flat_0.json-nft
@@ -25,7 +25,9 @@
           "ipv4_addr"
         ],
         "handle": 0,
-        "flags": "timeout"
+        "flags": [
+          "timeout"
+        ]
       }
     },
     {
@@ -38,7 +40,9 @@
           "inet_service"
         ],
         "handle": 0,
-        "flags": "timeout"
+        "flags": [
+          "timeout"
+        ]
       }
     }
   ]
diff --git a/tests/shell/testcases/sets/dumps/0034get_element_0.json-nft b/tests/shell/testcases/sets/dumps/0034get_element_0.json-nft
index 4f5ba0aa..bfc0e4a0 100644
--- a/tests/shell/testcases/sets/dumps/0034get_element_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0034get_element_0.json-nft
@@ -21,7 +21,9 @@
         "table": "t",
         "type": "inet_service",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           10,
           {
@@ -47,7 +49,9 @@
         "table": "t",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           "10.0.0.1",
           {
@@ -87,7 +91,9 @@
           "inet_service"
         ],
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "concat": [
diff --git a/tests/shell/testcases/sets/dumps/0035add_set_elements_flat_0.json-nft b/tests/shell/testcases/sets/dumps/0035add_set_elements_flat_0.json-nft
index f9fe4e6f..e4c77147 100644
--- a/tests/shell/testcases/sets/dumps/0035add_set_elements_flat_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0035add_set_elements_flat_0.json-nft
@@ -21,7 +21,9 @@
         "table": "x",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval"
+        "flags": [
+          "interval"
+        ]
       }
     }
   ]
diff --git a/tests/shell/testcases/sets/dumps/0038meter_list_0.json-nft b/tests/shell/testcases/sets/dumps/0038meter_list_0.json-nft
index 6f6555d2..5b13f59a 100644
--- a/tests/shell/testcases/sets/dumps/0038meter_list_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0038meter_list_0.json-nft
@@ -44,7 +44,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "size": 128,
-        "flags": "dynamic"
+        "flags": [
+          "dynamic"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/sets/dumps/0039delete_interval_0.json-nft b/tests/shell/testcases/sets/dumps/0039delete_interval_0.json-nft
index afa81958..d6e46aad 100644
--- a/tests/shell/testcases/sets/dumps/0039delete_interval_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0039delete_interval_0.json-nft
@@ -21,7 +21,9 @@
         "table": "t",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "range": [
diff --git a/tests/shell/testcases/sets/dumps/0040get_host_endian_elements_0.json-nft b/tests/shell/testcases/sets/dumps/0040get_host_endian_elements_0.json-nft
index 486ca453..4b6cf03c 100644
--- a/tests/shell/testcases/sets/dumps/0040get_host_endian_elements_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0040get_host_endian_elements_0.json-nft
@@ -21,7 +21,9 @@
         "table": "t",
         "type": "mark",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "range": [
diff --git a/tests/shell/testcases/sets/dumps/0041interval_0.json-nft b/tests/shell/testcases/sets/dumps/0041interval_0.json-nft
index c59a65ae..14a39330 100644
--- a/tests/shell/testcases/sets/dumps/0041interval_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0041interval_0.json-nft
@@ -21,7 +21,9 @@
         "table": "t",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           "192.168.2.196"
         ]
diff --git a/tests/shell/testcases/sets/dumps/0042update_set_0.json-nft b/tests/shell/testcases/sets/dumps/0042update_set_0.json-nft
index 3f98e120..bc1d4cc2 100644
--- a/tests/shell/testcases/sets/dumps/0042update_set_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0042update_set_0.json-nft
@@ -39,7 +39,9 @@
         "type": "ether_addr",
         "handle": 0,
         "size": 65535,
-        "flags": "dynamic"
+        "flags": [
+          "dynamic"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/sets/dumps/0043concatenated_ranges_1.json-nft b/tests/shell/testcases/sets/dumps/0043concatenated_ranges_1.json-nft
index 5ce063d7..92b59c86 100644
--- a/tests/shell/testcases/sets/dumps/0043concatenated_ranges_1.json-nft
+++ b/tests/shell/testcases/sets/dumps/0043concatenated_ranges_1.json-nft
@@ -24,7 +24,9 @@
           "ipv6_addr"
         ],
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "concat": [
@@ -1582,7 +1584,9 @@
           "ipv4_addr"
         ],
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "concat": [
diff --git a/tests/shell/testcases/sets/dumps/0044interval_overlap_1.json-nft b/tests/shell/testcases/sets/dumps/0044interval_overlap_1.json-nft
index 8f82990a..f4aae383 100644
--- a/tests/shell/testcases/sets/dumps/0044interval_overlap_1.json-nft
+++ b/tests/shell/testcases/sets/dumps/0044interval_overlap_1.json-nft
@@ -21,7 +21,9 @@
         "table": "t",
         "type": "inet_service",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           25,
           30,
diff --git a/tests/shell/testcases/sets/dumps/0046netmap_0.json-nft b/tests/shell/testcases/sets/dumps/0046netmap_0.json-nft
index 55f1a2ad..2b67252d 100644
--- a/tests/shell/testcases/sets/dumps/0046netmap_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0046netmap_0.json-nft
@@ -92,8 +92,12 @@
                   }
                 }
               },
-              "flags": "netmap",
-              "type_flags": "prefix"
+              "flags": [
+                "netmap"
+              ],
+              "type_flags": [
+                "prefix"
+              ]
             }
           }
         ]
@@ -156,8 +160,12 @@
                   }
                 }
               },
-              "flags": "netmap",
-              "type_flags": "prefix"
+              "flags": [
+                "netmap"
+              ],
+              "type_flags": [
+                "prefix"
+              ]
             }
           }
         ]
diff --git a/tests/shell/testcases/sets/dumps/0049set_define_0.json-nft b/tests/shell/testcases/sets/dumps/0049set_define_0.json-nft
index 98ccafd4..f8495bab 100644
--- a/tests/shell/testcases/sets/dumps/0049set_define_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0049set_define_0.json-nft
@@ -33,7 +33,9 @@
         "table": "filter",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "auto-merge": true,
         "elem": [
           "1.1.1.1"
diff --git a/tests/shell/testcases/sets/dumps/0051set_interval_counter_0.json-nft b/tests/shell/testcases/sets/dumps/0051set_interval_counter_0.json-nft
index 96cb397f..b468b5f9 100644
--- a/tests/shell/testcases/sets/dumps/0051set_interval_counter_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0051set_interval_counter_0.json-nft
@@ -33,7 +33,9 @@
         "table": "x",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "elem": {
diff --git a/tests/shell/testcases/sets/dumps/0052overlap_0.json-nft b/tests/shell/testcases/sets/dumps/0052overlap_0.json-nft
index 1ea8ede6..96d5fbcc 100644
--- a/tests/shell/testcases/sets/dumps/0052overlap_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0052overlap_0.json-nft
@@ -21,7 +21,9 @@
         "table": "filter",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "auto-merge": true,
         "elem": [
           "10.10.10.10",
diff --git a/tests/shell/testcases/sets/dumps/0054comments_set_0.json-nft b/tests/shell/testcases/sets/dumps/0054comments_set_0.json-nft
index a7293922..3fd6d37e 100644
--- a/tests/shell/testcases/sets/dumps/0054comments_set_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0054comments_set_0.json-nft
@@ -22,7 +22,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "comment": "test",
-        "flags": "interval"
+        "flags": [
+          "interval"
+        ]
       }
     },
     {
@@ -34,7 +36,9 @@
         "handle": 0,
         "comment": "another test",
         "map": "ipv4_addr",
-        "flags": "interval"
+        "flags": [
+          "interval"
+        ]
       }
     }
   ]
diff --git a/tests/shell/testcases/sets/dumps/0055tcpflags_0.json-nft b/tests/shell/testcases/sets/dumps/0055tcpflags_0.json-nft
index 0232ad6f..e37139f3 100644
--- a/tests/shell/testcases/sets/dumps/0055tcpflags_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0055tcpflags_0.json-nft
@@ -21,7 +21,9 @@
         "table": "test",
         "type": "tcp_flag",
         "handle": 0,
-        "flags": "constant",
+        "flags": [
+          "constant"
+        ],
         "elem": [
           {
             "|": [
diff --git a/tests/shell/testcases/sets/dumps/0060set_multistmt_1.json-nft b/tests/shell/testcases/sets/dumps/0060set_multistmt_1.json-nft
index 99805e55..6098dc56 100644
--- a/tests/shell/testcases/sets/dumps/0060set_multistmt_1.json-nft
+++ b/tests/shell/testcases/sets/dumps/0060set_multistmt_1.json-nft
@@ -34,7 +34,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "size": 65535,
-        "flags": "dynamic",
+        "flags": [
+          "dynamic"
+        ],
         "elem": [
           {
             "elem": {
diff --git a/tests/shell/testcases/sets/dumps/0062set_connlimit_0.json-nft b/tests/shell/testcases/sets/dumps/0062set_connlimit_0.json-nft
index 7a948b1d..c5e60e36 100644
--- a/tests/shell/testcases/sets/dumps/0062set_connlimit_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0062set_connlimit_0.json-nft
@@ -22,7 +22,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "size": 65535,
-        "flags": "dynamic"
+        "flags": [
+          "dynamic"
+        ]
       }
     },
     {
@@ -33,7 +35,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "size": 65535,
-        "flags": "dynamic",
+        "flags": [
+          "dynamic"
+        ],
         "stmt": [
           {
             "ct count": {
diff --git a/tests/shell/testcases/sets/dumps/0063set_catchall_0.json-nft b/tests/shell/testcases/sets/dumps/0063set_catchall_0.json-nft
index fcfe9830..3006f75a 100644
--- a/tests/shell/testcases/sets/dumps/0063set_catchall_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0063set_catchall_0.json-nft
@@ -55,7 +55,9 @@
         "table": "x",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "elem": {
diff --git a/tests/shell/testcases/sets/dumps/0064map_catchall_0.json-nft b/tests/shell/testcases/sets/dumps/0064map_catchall_0.json-nft
index b7496ac8..64dd2667 100644
--- a/tests/shell/testcases/sets/dumps/0064map_catchall_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0064map_catchall_0.json-nft
@@ -50,7 +50,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "map": "ipv4_addr",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             {
diff --git a/tests/shell/testcases/sets/dumps/0069interval_merge_0.json-nft b/tests/shell/testcases/sets/dumps/0069interval_merge_0.json-nft
index 7868cb33..d7b32f8c 100644
--- a/tests/shell/testcases/sets/dumps/0069interval_merge_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0069interval_merge_0.json-nft
@@ -21,7 +21,9 @@
         "table": "x",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "auto-merge": true,
         "elem": [
           {
diff --git a/tests/shell/testcases/sets/dumps/0071unclosed_prefix_interval_0.json-nft b/tests/shell/testcases/sets/dumps/0071unclosed_prefix_interval_0.json-nft
index 588c2b1b..6b579a2e 100644
--- a/tests/shell/testcases/sets/dumps/0071unclosed_prefix_interval_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/0071unclosed_prefix_interval_0.json-nft
@@ -29,7 +29,9 @@
         "table": "t",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "prefix": {
@@ -53,7 +55,9 @@
         "table": "t",
         "type": "ipv6_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "prefix": {
diff --git a/tests/shell/testcases/sets/dumps/0073flat_interval_set.json-nft b/tests/shell/testcases/sets/dumps/0073flat_interval_set.json-nft
index e4649a7d..e2fb6214 100644
--- a/tests/shell/testcases/sets/dumps/0073flat_interval_set.json-nft
+++ b/tests/shell/testcases/sets/dumps/0073flat_interval_set.json-nft
@@ -32,7 +32,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "map": "counter",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             {
diff --git a/tests/shell/testcases/sets/dumps/0074nested_interval_set.json-nft b/tests/shell/testcases/sets/dumps/0074nested_interval_set.json-nft
index e4649a7d..e2fb6214 100644
--- a/tests/shell/testcases/sets/dumps/0074nested_interval_set.json-nft
+++ b/tests/shell/testcases/sets/dumps/0074nested_interval_set.json-nft
@@ -32,7 +32,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "map": "counter",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             {
diff --git a/tests/shell/testcases/sets/dumps/concat_interval_0.json-nft b/tests/shell/testcases/sets/dumps/concat_interval_0.json-nft
index 3283f269..d65065e4 100644
--- a/tests/shell/testcases/sets/dumps/concat_interval_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/concat_interval_0.json-nft
@@ -25,7 +25,9 @@
           "inet_service"
         ],
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "stmt": [
           {
             "counter": null
@@ -43,7 +45,9 @@
           "mark"
         ],
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "concat": [
diff --git a/tests/shell/testcases/sets/dumps/concat_nlmsg_overrun.json-nft b/tests/shell/testcases/sets/dumps/concat_nlmsg_overrun.json-nft
index 2a8d233e..db9f547b 100644
--- a/tests/shell/testcases/sets/dumps/concat_nlmsg_overrun.json-nft
+++ b/tests/shell/testcases/sets/dumps/concat_nlmsg_overrun.json-nft
@@ -25,7 +25,9 @@
           "ipv4_addr"
         ],
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "elem": {
diff --git a/tests/shell/testcases/sets/dumps/dynset_missing.json-nft b/tests/shell/testcases/sets/dumps/dynset_missing.json-nft
index 9de5b821..ad8a7cc0 100644
--- a/tests/shell/testcases/sets/dumps/dynset_missing.json-nft
+++ b/tests/shell/testcases/sets/dumps/dynset_missing.json-nft
@@ -34,7 +34,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "size": 65535,
-        "flags": "dynamic"
+        "flags": [
+          "dynamic"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/sets/dumps/exact_overlap_0.json-nft b/tests/shell/testcases/sets/dumps/exact_overlap_0.json-nft
index 7bba69d5..958d1e5c 100644
--- a/tests/shell/testcases/sets/dumps/exact_overlap_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/exact_overlap_0.json-nft
@@ -21,7 +21,9 @@
         "table": "t",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "prefix": {
diff --git a/tests/shell/testcases/sets/dumps/inner_0.json-nft b/tests/shell/testcases/sets/dumps/inner_0.json-nft
index 581d5340..e5dc198f 100644
--- a/tests/shell/testcases/sets/dumps/inner_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/inner_0.json-nft
@@ -74,7 +74,9 @@
         },
         "handle": 0,
         "size": 65535,
-        "flags": "dynamic"
+        "flags": [
+          "dynamic"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/sets/dumps/interval_size.json-nft b/tests/shell/testcases/sets/dumps/interval_size.json-nft
index 96fc54fc..3ae54e08 100644
--- a/tests/shell/testcases/sets/dumps/interval_size.json-nft
+++ b/tests/shell/testcases/sets/dumps/interval_size.json-nft
@@ -29,7 +29,9 @@
         },
         "handle": 0,
         "size": 1,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "auto-merge": true,
         "elem": [
           {
@@ -56,7 +58,9 @@
         },
         "handle": 0,
         "size": 1,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           "0.0.0.0"
         ]
diff --git a/tests/shell/testcases/sets/dumps/meter_set_reuse.json-nft b/tests/shell/testcases/sets/dumps/meter_set_reuse.json-nft
index 9210c90b..ab4ac061 100644
--- a/tests/shell/testcases/sets/dumps/meter_set_reuse.json-nft
+++ b/tests/shell/testcases/sets/dumps/meter_set_reuse.json-nft
@@ -33,7 +33,9 @@
         ],
         "handle": 0,
         "size": 65535,
-        "flags": "dynamic"
+        "flags": [
+          "dynamic"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/sets/dumps/range_with_same_start_end.json-nft b/tests/shell/testcases/sets/dumps/range_with_same_start_end.json-nft
index e1daa8f8..c4682475 100644
--- a/tests/shell/testcases/sets/dumps/range_with_same_start_end.json-nft
+++ b/tests/shell/testcases/sets/dumps/range_with_same_start_end.json-nft
@@ -21,7 +21,9 @@
         "table": "t",
         "type": "inet_service",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           10,
           30,
diff --git a/tests/shell/testcases/sets/dumps/set_element_timeout_updates.json-nft b/tests/shell/testcases/sets/dumps/set_element_timeout_updates.json-nft
index acb2f1f4..d92d8d7a 100644
--- a/tests/shell/testcases/sets/dumps/set_element_timeout_updates.json-nft
+++ b/tests/shell/testcases/sets/dumps/set_element_timeout_updates.json-nft
@@ -40,7 +40,9 @@
           }
         },
         "handle": 0,
-        "flags": "timeout",
+        "flags": [
+          "timeout"
+        ],
         "timeout": 60
       }
     }
diff --git a/tests/shell/testcases/sets/dumps/set_eval_0.json-nft b/tests/shell/testcases/sets/dumps/set_eval_0.json-nft
index 6f4f4c61..6f692381 100644
--- a/tests/shell/testcases/sets/dumps/set_eval_0.json-nft
+++ b/tests/shell/testcases/sets/dumps/set_eval_0.json-nft
@@ -33,7 +33,9 @@
         "table": "nat",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval"
+        "flags": [
+          "interval"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/sets/dumps/sets_with_ifnames.json-nft b/tests/shell/testcases/sets/dumps/sets_with_ifnames.json-nft
index 77ca5086..ac428429 100644
--- a/tests/shell/testcases/sets/dumps/sets_with_ifnames.json-nft
+++ b/tests/shell/testcases/sets/dumps/sets_with_ifnames.json-nft
@@ -71,7 +71,9 @@
         "table": "testifsets",
         "type": "ifname",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           "abcdef*",
           "othername",
@@ -115,7 +117,9 @@
           "ifname"
         ],
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "concat": [
@@ -162,7 +166,9 @@
         "type": "ifname",
         "handle": 0,
         "map": "verdict",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             "abcdef*",
diff --git a/tests/shell/testcases/sets/dumps/typeof_sets_concat.json-nft b/tests/shell/testcases/sets/dumps/typeof_sets_concat.json-nft
index ffb97f77..144cd743 100644
--- a/tests/shell/testcases/sets/dumps/typeof_sets_concat.json-nft
+++ b/tests/shell/testcases/sets/dumps/typeof_sets_concat.json-nft
@@ -199,7 +199,9 @@
         },
         "handle": 0,
         "size": 16,
-        "flags": "interval"
+        "flags": [
+          "interval"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/transactions/dumps/0002table_0.json-nft b/tests/shell/testcases/transactions/dumps/0002table_0.json-nft
index b1fefc31..70960a94 100644
--- a/tests/shell/testcases/transactions/dumps/0002table_0.json-nft
+++ b/tests/shell/testcases/transactions/dumps/0002table_0.json-nft
@@ -12,7 +12,9 @@
         "family": "ip",
         "name": "x",
         "handle": 0,
-        "flags": "dormant"
+        "flags": [
+          "dormant"
+        ]
       }
     },
     {
diff --git a/tests/shell/testcases/transactions/dumps/0037set_0.json-nft b/tests/shell/testcases/transactions/dumps/0037set_0.json-nft
index f9fe4e6f..e4c77147 100644
--- a/tests/shell/testcases/transactions/dumps/0037set_0.json-nft
+++ b/tests/shell/testcases/transactions/dumps/0037set_0.json-nft
@@ -21,7 +21,9 @@
         "table": "x",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval"
+        "flags": [
+          "interval"
+        ]
       }
     }
   ]
diff --git a/tests/shell/testcases/transactions/dumps/0038set_0.json-nft b/tests/shell/testcases/transactions/dumps/0038set_0.json-nft
index 5f97d09e..0a36f4a8 100644
--- a/tests/shell/testcases/transactions/dumps/0038set_0.json-nft
+++ b/tests/shell/testcases/transactions/dumps/0038set_0.json-nft
@@ -21,7 +21,9 @@
         "table": "x",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "prefix": {
diff --git a/tests/shell/testcases/transactions/dumps/0039set_0.json-nft b/tests/shell/testcases/transactions/dumps/0039set_0.json-nft
index 5f97d09e..0a36f4a8 100644
--- a/tests/shell/testcases/transactions/dumps/0039set_0.json-nft
+++ b/tests/shell/testcases/transactions/dumps/0039set_0.json-nft
@@ -21,7 +21,9 @@
         "table": "x",
         "type": "ipv4_addr",
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "prefix": {
diff --git a/tests/shell/testcases/transactions/dumps/0047set_0.json-nft b/tests/shell/testcases/transactions/dumps/0047set_0.json-nft
index fb6348f2..a7e677b2 100644
--- a/tests/shell/testcases/transactions/dumps/0047set_0.json-nft
+++ b/tests/shell/testcases/transactions/dumps/0047set_0.json-nft
@@ -22,7 +22,9 @@
         "type": "ipv4_addr",
         "handle": 0,
         "map": "classid",
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           [
             "10.1.26.2",
diff --git a/tests/shell/testcases/transactions/dumps/doubled-set.json-nft b/tests/shell/testcases/transactions/dumps/doubled-set.json-nft
index 1b9af211..2dced124 100644
--- a/tests/shell/testcases/transactions/dumps/doubled-set.json-nft
+++ b/tests/shell/testcases/transactions/dumps/doubled-set.json-nft
@@ -24,7 +24,9 @@
           "ifname"
         ],
         "handle": 0,
-        "flags": "interval",
+        "flags": [
+          "interval"
+        ],
         "elem": [
           {
             "concat": [
diff --git a/tests/shell/testcases/transactions/dumps/table_onoff.json-nft b/tests/shell/testcases/transactions/dumps/table_onoff.json-nft
index a7583e8c..9b48ca47 100644
--- a/tests/shell/testcases/transactions/dumps/table_onoff.json-nft
+++ b/tests/shell/testcases/transactions/dumps/table_onoff.json-nft
@@ -12,7 +12,9 @@
         "family": "ip",
         "name": "t",
         "handle": 0,
-        "flags": "dormant"
+        "flags": [
+          "dormant"
+        ]
       }
     },
     {