Symbol: IPV6_MTU
net/ipv6/ipv6_sockglue.c
1179
case IPV6_MTU:
net/ipv6/ipv6_sockglue.c
426
case IPV6_MTU:
net/mptcp/sockopt.c
511
case IPV6_MTU:
tools/testing/selftests/net/udpgso.c
346
ret = getsockopt(fd, SOL_IPV6, IPV6_MTU, &mtu, &vallen);