From 2297f31339cc3698e490b4dbdc7e14205d1c2f30 Mon Sep 17 00:00:00 2001
From: Jaka Hudoklin <jakahudoklin@gmail.com>
Date: Fri, 13 Dec 2013 10:24:50 +0100
Subject: [PATCH] nixos/network-interfaces: do not try to enable or disable
 ipv6 in container

---
 nixos/modules/tasks/network-interfaces.nix | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/nixos/modules/tasks/network-interfaces.nix b/nixos/modules/tasks/network-interfaces.nix
index 9619f0f5ebe..bbfcb62c5d7 100644
--- a/nixos/modules/tasks/network-interfaces.nix
+++ b/nixos/modules/tasks/network-interfaces.nix
@@ -401,9 +401,11 @@ in
                 EOF
 
                 # Disable or enable IPv6.
-                if [ -e /proc/sys/net/ipv6/conf/all/disable_ipv6 ]; then
-                  echo ${if cfg.enableIPv6 then "0" else "1"} > /proc/sys/net/ipv6/conf/all/disable_ipv6
-                fi
+                ${optionalString (!config.boot.isContainer) ''
+                  if [ -e /proc/sys/net/ipv6/conf/all/disable_ipv6 ]; then
+                    echo ${if cfg.enableIPv6 then "0" else "1"} > /proc/sys/net/ipv6/conf/all/disable_ipv6
+                  fi
+                ''}
 
                 # Set the default gateway.
                 ${optionalString (cfg.defaultGateway != "") ''