From fe3da83b7e26b6f7cdde7a457a794c215d16e969 Mon Sep 17 00:00:00 2001
From: Joachim Fasting <joachifm@fastmail.fm>
Date: Thu, 3 Oct 2019 09:16:53 +0200
Subject: [PATCH] nixos/containers: explicitly load kernel modules for
 networking

List all modules that *may* be required depending on individual container
configurations; don't expect that further modules can be loaded after boot.

Fixes https://github.com/NixOS/nixpkgs/issues/38676
---
 nixos/modules/virtualisation/containers.nix | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/nixos/modules/virtualisation/containers.nix b/nixos/modules/virtualisation/containers.nix
index 9c9f8fc0c215..691ee2c136ec 100644
--- a/nixos/modules/virtualisation/containers.nix
+++ b/nixos/modules/virtualisation/containers.nix
@@ -824,5 +824,12 @@ in
     '';
 
     environment.systemPackages = [ pkgs.nixos-container ];
+
+    boot.kernelModules = [
+      "bridge"
+      "macvlan"
+      "tap"
+      "tun"
+    ];
   });
 }