ipv6_sock_ac_drop 161 include/net/addrconf.h extern int ipv6_sock_ac_drop(struct sock *sk,int ifindex,struct in6_addr *addr); ipv6_sock_ac_drop 522 net/ipv6/ipv6_sockglue.c retv = ipv6_sock_ac_drop(sk, mreq.ipv6mr_ifindex, &mreq.ipv6mr_acaddr);