net/ipv4/netfilter/ipt_ipv4options.c: In function 'match': net/ipv4/netfilter/ipt_ipv4options.c:35: error: 'const struct sk_buff' has no member named 'nh' net/ipv4/netfilter/ipt_ipv4options.c: At top level: net/ipv4/netfilter/ipt_ipv4options.c:161: warning: initialization from incompatible pointer type net/ipv4/netfilter/ipt_ipv4options.c: In function 'init': net/ipv4/netfilter/ipt_ipv4options.c:167: warning: implicit declaration of function 'ipt_register_match' net/ipv4/netfilter/ipt_ipv4options.c: In function 'fini': net/ipv4/netfilter/ipt_ipv4options.c:172: warning: implicit declaration of function 'ipt_unregister_match' make[3]: *** [net/ipv4/netfilter/ipt_ipv4options.o] Error 1 make[2]: *** [net/ipv4/netfilter] Error 2 make[1]: *** [net/ipv4] Error 2 make: *** [net] Error 2