From e1c1fdd8c222f646ce50e8b04469a238b59f0590 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Na=C3=AFm=20Favier?= <n@monade.li>
Date: Fri, 17 Jun 2022 19:38:59 +0200
Subject: [PATCH] nixos/networkd: add `IPv6PrivacyExtensions=kernel` for
 default networks

Maybe this could go in `genericNetwork`, but I don't know if it makes
sense for bridges, bonds etc. and I don't want to break anything.
---
 nixos/modules/tasks/network-interfaces-systemd.nix | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/nixos/modules/tasks/network-interfaces-systemd.nix b/nixos/modules/tasks/network-interfaces-systemd.nix
index 65cd52a35cdf..1657fabcd9b1 100644
--- a/nixos/modules/tasks/network-interfaces-systemd.nix
+++ b/nixos/modules/tasks/network-interfaces-systemd.nix
@@ -95,6 +95,7 @@ in
           DHCP = "yes";
           linkConfig.RequiredForOnline =
             lib.mkDefault config.systemd.network.wait-online.anyInterface;
+          networkConfig.IPv6PrivacyExtensions = "kernel";
         };
         networks."99-wireless-client-dhcp" = lib.mkIf cfg.useDHCP {
           # Like above, but this is much more likely to be correct.
@@ -102,6 +103,7 @@ in
           DHCP = "yes";
           linkConfig.RequiredForOnline =
             lib.mkDefault config.systemd.network.wait-online.anyInterface;
+          networkConfig.IPv6PrivacyExtensions = "kernel";
           # We also set the route metric to one more than the default
           # of 1024, so that Ethernet is preferred if both are
           # available.