PF_INET6 271 include/linux/ipv6.h if (sk_from->sk_family == PF_INET6) PF_INET6 279 include/linux/ipv6.h #define ipv6_sk_rxinfo(sk) ((sk)->sk_family == PF_INET6 && \ PF_INET6 445 include/net/ip.h if (sk->sk_family == PF_INET6) { PF_INET6 115 include/net/udp_tunnel.h if (sock->sk->sk_family == PF_INET6)