To manage the IPv6 /64 subnet assigned to your KVM vps please use the following button to carve out the single IP you need to assign to your application(s)
To manaually add one ip to your running vps you can run as root:
ip -6 a a 2a00:dcc0:1xxx:ayyy::53/64 dev eth0
ip -6 r a default via fe80::1 dev eth0
ip -6 r a default via fe80::1 dev eth0
