tag	line	file	source code
ip_mc_ttl	693	net/inet/af_inet.c	sk->ip_mc_ttl=1;
ip_mc_ttl	2079	net/inet/ip.c	sk->ip_mc_ttl=(int)ucval;
ip_mc_ttl	2333	net/inet/ip.c	val=sk->ip_mc_ttl;
ip_mc_ttl	178	net/inet/sock.h	int        ip_mc_ttl;      /* Multicasting TTL */
ip_mc_ttl	287	net/inet/udp.c	ttl = sk->ip_mc_ttl;