IP6_MAX_MTU        44 include/net/ip6_route.h #define IP6_MAX_MTU (0xFFFF + sizeof(struct ipv6hdr))
IP6_MAX_MTU       175 tools/testing/selftests/net/udpgso.c #define IP6_MAX_MTU	(ETH_MAX_MTU + sizeof(struct ip6_hdr))