ip_mc_output      100 include/net/ip.h extern int		ip_mc_output(struct sk_buff *skb);
ip_mc_output     2281 net/ipv4/route.c 			rth->u.dst.output = ip_mc_output;
ip_mc_output     2289 net/ipv4/route.c 				rth->u.dst.output = ip_mc_output;