Networking
This site provides snippets for configuring your network just right for the use case you are looking for. All configuration is for configuration.nix
IPv6
Prefix delegation with fixed DUID
Sometimes the hosting provider manages ipv6 networks via a so-called DUID or clientid. This snippet is required to make the network routable:
{ config, pkgs, ... }:
let
# Get this from your hosting provider
clientid = "00:11:22:33:44:55:66:77:88:99";
interface = "enp2s0";
subnet = "56";
network = "2001:bbb:3333:1111::/${subnet}";
own_ip = "2001:bbb:3333:1111::1/${subnet}";
in {
# ... snip ...
networking.enableIPv6 = true;
networking.useDHCP = true;
networking.dhcpcd.persistent = true;
networking.dhcpcd.extraConfig = ''
clientid "${clientid}"
noipv6rs
interface ${interface}
ia_pd 1/${network} ${interface}
static ip6_address=${own_ip}
'';
environment.etc."dhcpcd.duid".text = clientid;
}