enable IPv6 (Docker)
/etc/docker/daemon.json
{ "ipv6": true, "fixed-cidr-v6": "2001:db8:1::100:/64", }
Console:
$ ip -6 route add 2001:db8:1::/64 dev docker0
$ sysctl net.ipv6.conf.default.forwarding=1
sysctl net.ipv6.conf.all.forwarding=1
service docker stop
service docker start