Hi, I can build ipset 7.6 modules on 4.19.152 kernel (Debian buster current stable), but 7.7 fails: $ configure; make $ make modules jhash.h:90:32 `fallthrough` undeclared jhash.h:136:21 `fallthrough` undeclared ip_set_core.c:90:40 macro list_for_each_entry_rcu passed 4 arguments but takes just 3 ip_set_core.c:89:2 list_for_each_entry_rcu undeclared Plus a few more but I think they are just because the compiler is confused after the above problems. There are commits in 7.7 touching the above pieces of code. Btw, and unrelated to above, recent kernels (4.19.134+) remove tc_skb_protocol [0] but seems to provide vlan aware skb_protocol [1] instead. Perhaps ipset should use that when available, instead of its own tc_skb_protocol fallback? [0] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v4.19.134&id=9fd235ff00008e093951b4801349436fa27c64e8 [1] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?h=v4.19.134&id=d4d0e6c07bcd17d704afe64e10382ffc5d342765
