ip6gre_tnl_link_config_route 1153 net/ipv6/ip6_gre.c 	ip6gre_tnl_link_config_route(t, set_mtu, ip6gre_calc_hlen(t));
ip6gre_tnl_link_config_route 2236 net/ipv6/ip6_gre.c 	ip6gre_tnl_link_config_route(t, set_mtu, ip6erspan_calc_hlen(t));