IPv6

[The-Compiler]

From studentenportal/deploy-new#8

Nine does not automatically configure the IPv6 address.

• Prefix: 2a02:418:1003:1e::/64
• Gateway: fe80::1
• Reservierte IPs: 2a02:418:1003:1e::1, 2a02:418:1003:1e::2, 2a02:418:1003:1e::3
• DNS Resolver: 2a02:419:1002::5, 2a02:418:4005::21, 2a02:418:4004::7

and

Make sure to not forget about IPv6 when configuring the firewall :)

(out of scope for me at the moment, since not previously discussed)