From: Yu Watanabe <watanabe.yu+github@gmail.com>
Date: Tue, 11 Jun 2019 14:29:57 +0000 (+0900)
Subject: network: ignore requested ipv6 routing policy rule when ipv6 is disabled by sysctl
X-Git-Tag: v243-rc1~297^2~2
X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fsystemd.git;a=commitdiff_plain;h=7ef7e5509b637e660e89ba8a938930ec01de6e54

network: ignore requested ipv6 routing policy rule when ipv6 is disabled by sysctl
---

diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c
index 427d88f4443..0c243508a43 100644
--- a/src/network/networkd-link.c
+++ b/src/network/networkd-link.c
@@ -838,8 +838,8 @@ static int link_request_set_routing_policy_rule(Link *link) {
                         link_enter_failed(link);
                         return r;
                 }
-
-                link->routing_policy_rule_messages++;
+                if (r > 0)
+                        link->routing_policy_rule_messages++;
         }
 
         routing_policy_rule_purge(link->manager, link);
diff --git a/src/network/networkd-routing-policy-rule.c b/src/network/networkd-routing-policy-rule.c
index faa9f8576c7..be7f2f225bb 100644
--- a/src/network/networkd-routing-policy-rule.c
+++ b/src/network/networkd-routing-policy-rule.c
@@ -484,6 +484,11 @@ int routing_policy_rule_configure(RoutingPolicyRule *rule, Link *link, link_netl
         assert(link->manager);
         assert(link->manager->rtnl);
 
+        if (rule->family == AF_INET6 && manager_sysctl_ipv6_enabled(link->manager) == 0) {
+                log_link_warning(link, "An IPv6 routing policy rule is requested, but IPv6 is disabled by sysctl, ignoring.");
+                return 0;
+        }
+
         r = sd_rtnl_message_new_routing_policy_rule(link->manager->rtnl, &m, RTM_NEWRULE, rule->family);
         if (r < 0)
                 return log_error_errno(r, "Could not allocate RTM_NEWRULE message: %m");
@@ -593,7 +598,7 @@ int routing_policy_rule_configure(RoutingPolicyRule *rule, Link *link, link_netl
         if (r < 0)
                 return log_error_errno(r, "Could not add rule: %m");
 
-        return 0;
+        return 1;
 }
 
 static int parse_fwmark_fwmask(const char *s, uint32_t *fwmark, uint32_t *fwmask) {