IPPROTO_NONE 21 include/linux/netfilter_ipv6.h (nexthdr == IPPROTO_NONE) || IPPROTO_NONE 645 net/ipv4/esp4.c if (err == IPPROTO_NONE) IPPROTO_NONE 545 net/ipv6/esp6.c if (err == IPPROTO_NONE) IPPROTO_NONE 685 net/ipv6/exthdrs.c ret = inet6_add_protocol(&nodata_protocol, IPPROTO_NONE); IPPROTO_NONE 700 net/ipv6/exthdrs.c inet6_del_protocol(&nodata_protocol, IPPROTO_NONE); IPPROTO_NONE 2304 net/ipv6/ip6mr.c iph->nexthdr = IPPROTO_NONE; IPPROTO_NONE 96 net/ipv6/mip6.c if (mh->ip6mh_proto != IPPROTO_NONE) { IPPROTO_NONE 50 net/ipv6/netfilter/ip6t_mh.c if (mh->ip6mh_proto != IPPROTO_NONE) {