taglinefilesource code
ttl334drivers/net/slhc.c|| ip->ttl != cs->cs_ip.ttl
ttl105drivers/net/slip.cdlen, ip->ihl, ip->version, ip->ttl, ip->protocol);
ttl72include/linux/ip.hunsigned char    ttl;
ttl85net/inet/ip.cip->id, ip->ttl, ip->protocol, ip->check);
ttl261net/inet/ip.ciph->ttl      = 32;
ttl1087net/inet/ip.ciph->ttl--;
ttl1088net/inet/ip.cif (iph->ttl <= 0) {