nft does not handle this correctly.
This test fails. In:
inet input ip protocol ipv6-icmp meta l4proto ipv6-icmp icmpv6 type 1
Out:
meta l4proto 58 icmpv6 type destination-unreachable
which loses the "ipv4" dependency, i.e. listing should show the rule as-is.
Signed-off-by: Florian Westphal <fw@strlen.de>
icmp type echo-request;ok
ip6 nexthdr icmpv6 icmpv6 type echo-request;ok;ip6 nexthdr 58 icmpv6 type echo-request
icmpv6 type echo-request;ok
+# must not remove 'ip protocol' dependency, this explicitly matches icmpv6-in-ipv4.
+ip protocol ipv6-icmp meta l4proto ipv6-icmp icmpv6 type 1;ok;ip protocol 58 meta l4proto 58 icmpv6 type destination-unreachable
[ payload load 1b @ transport header + 0 => reg 1 ]
[ cmp eq reg 1 0x00000080 ]
+# ip protocol ipv6-icmp meta l4proto ipv6-icmp icmpv6 type 1
+inet filter input
+ [ meta load nfproto => reg 1 ]
+ [ cmp eq reg 1 0x00000002 ]
+ [ payload load 1b @ network header + 9 => reg 1 ]
+ [ cmp eq reg 1 0x0000003a ]
+ [ meta load l4proto => reg 1 ]
+ [ cmp eq reg 1 0x0000003a ]
+ [ payload load 1b @ transport header + 0 => reg 1 ]
+ [ cmp eq reg 1 0x00000001 ]