26 lines
1.2 KiB
Nix
26 lines
1.2 KiB
Nix
{ config, lib, pkgs, ... }:
|
|
|
|
# IPv6-mostly support via NetworkManager (RFC 8925 + RFC 6877 / 464XLAT).
|
|
# Requires NetworkManager >= 1.58 (pkgs.networkmanager-clat in practice).
|
|
# Sets ipv4.clat=auto and ipv4.dhcp-ipv6-only-preferred=auto as connection
|
|
# defaults, mirroring the Fedora 45 change:
|
|
# https://fedoraproject.org/wiki/Changes/IPv6-Mostly_Support_In_NetworkManager
|
|
{
|
|
options.lumpiasty.ipv6Mostly = lib.mkEnableOption "Enable IPv6-mostly (RFC 8925 + CLAT/464XLAT) support in NetworkManager";
|
|
|
|
config = lib.mkIf config.lumpiasty.ipv6Mostly {
|
|
# Use the patched NM build with CLAT support, without replacing pkgs.networkmanager
|
|
# globally (which would cascade rebuilds across the entire system closure).
|
|
networking.networkmanager.package = pkgs.networkmanager-clat;
|
|
|
|
# Drop a conf.d snippet that sets connection-level defaults.
|
|
networking.networkmanager.settings.connection = {
|
|
# IPv6-mostly: automatically enable CLAT (464XLAT) and DHCPv4 option 108
|
|
# when the network advertises PREF64 and/or option 108 (RFC 8925).
|
|
# On networks without these, behaviour is unchanged (native IPv4 proceeds).
|
|
"ipv4.clat" = "auto";
|
|
"ipv4.dhcp-ipv6-only-preferred" = "auto";
|
|
};
|
|
};
|
|
}
|