Someone

server:ifconfig gif1 createifconfig gif1 tunnel 10.31.15.225 10.31.1.2ifconfig gif1 inet6 alias 2a01:48:100:13b:ffff:ffff:ffff:0 2a01:48:100:13b:ffff:ffff:ffff:1 prefixlen 128route add -inet6 2a01:48:100:13b:ffff:ffff:ffff:1 -interface gif1route add -inet6 2a01:48:100:13b:1::/80 -interface gif1client:ifconfig gif0 createifconfig gif0 tunnel 10.31.1.2 10.31.15.225ifconfig gif0 inet6 alias 2a01:48:100:13b:ffff:ffff:ffff:1 2a01:48:100:13b:ffff:ffff:ffff:0 prefixlen 128route add -inet6 :: -interface gif0route add -inet6 2a01:48:100:13b:ffff:ffff:ffff:0 -interface gif0route add -inet6 2a01:48:100:13b:1:: -interface fxp0