ipv6_sock_ac_join 272 include/net/addrconf.h int ipv6_sock_ac_join(struct sock *sk, int ifindex, ipv6_sock_ac_join 676 net/ipv6/ipv6_sockglue.c retv = ipv6_sock_ac_join(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_acaddr);