diff --git a/hosts/containers/dn42/default.nix b/hosts/containers/dn42/default.nix
index f0ed15c3..12c2a777 100644
--- a/hosts/containers/dn42/default.nix
+++ b/hosts/containers/dn42/default.nix
@@ -32,6 +32,13 @@ in {
   # No Firewalling!
   networking.firewall.enable = false;
 
+  boot.kernel.sysctl = {
+    "net.ipv4.conf.all.forwarding" = true;
+    "net.ipv4.conf.default.forwarding" = true;
+    "net.ipv6.conf.all.forwarding" = true;
+    "net.ipv6.conf.default.forwarding" = true;
+  };
+
   boot.postBootCommands = ''
     if [ ! -c /dev/net/tun ]; then
       mkdir -p /dev/net