IPV6_MTU          808 net/ipv6/ipv6_sockglue.c 	case IPV6_MTU:
IPV6_MTU         1123 net/ipv6/ipv6_sockglue.c 	case IPV6_MTU:
IPV6_MTU          347 tools/testing/selftests/net/udpgso.c 		ret = getsockopt(fd, SOL_IPV6, IPV6_MTU, &mtu, &vallen);