diff --git a/hosts/router/configuration.nix b/hosts/router/configuration.nix
index df81895..beabae6 100644
--- a/hosts/router/configuration.nix
+++ b/hosts/router/configuration.nix
@@ -35,6 +35,17 @@
 
   networking.nameservers = [ "10.42.10.1" "2a01:4f8:1c0c:8221::1" ];
 
+  boot.kernel.sysctl = {
+    "net.ipv4.conf.all.forwarding" = true;
+    "net.ipv4.conf.default.forwarding" = true;
+
+    "net.ipv6.conf.all.accept_ra" = 0;
+    "net.ipv6.conf.default.accept_ra" = 0;
+
+    "net.ipv6.conf.all.forwarding" = true;
+    "net.ipv6.conf.default.forwarding" = true;
+  };
+
   services.radvd.enable = true;
 
   services.kea.dhcp4 = {