diff --git a/hosts/router/10-net-services.nix b/hosts/router/10-net-services.nix
index d563f4f..31d4eb7 100644
--- a/hosts/router/10-net-services.nix
+++ b/hosts/router/10-net-services.nix
@@ -24,6 +24,7 @@
       prefix ::/64 {};
       RDNSS 2a01:4f8:1c0c:8221::8 {};
       DNSSL bula22.de {};
+      AdvLinkMTU 1280;
     };
   '';