diff --git a/hosts/router/151-net-technik-iot.nix b/hosts/router/151-net-technik-iot.nix
index 366650d..958c044 100644
--- a/hosts/router/151-net-technik-iot.nix
+++ b/hosts/router/151-net-technik-iot.nix
@@ -6,10 +6,23 @@
     interface = "ens18";
   };
 
+  networking.interfaces.net-technik-iot.ipv6.addresses = [
+    { address = "fe80::1"; prefixLength = 64; }
+    { address = "fd00:10:42:151::1"; prefixLength = 64; }
+  ];
   networking.interfaces.net-technik-iot.ipv4.addresses = [
     { address = "10.42.151.1"; prefixLength = 24; }
   ];
 
+  services.radvd.config = ''
+    interface net-technik-iot {
+      AdvSendAdvert on;
+      prefix ::/64 {};
+      RDNSS 2a01:4f8:1c0c:8221::8 {};
+      DNSSL bula22.de {};
+    };
+  '';
+
   services.kea.dhcp4 = {
     settings = {
       interfaces-config = {
diff --git a/hosts/router/prefix-delegation.nix b/hosts/router/prefix-delegation.nix
index 9ea3946..27c991b 100644
--- a/hosts/router/prefix-delegation.nix
+++ b/hosts/router/prefix-delegation.nix
@@ -28,7 +28,7 @@
         ia_pd 1/::/56 net-hospital/203/64 net-zoll/204/64 net-leitstelle/205/64 net-verwaltung/206/64
       interface ppp-uplink-b
         ipv6rs
-        ia_pd 1/::/56 net-ikt/201/64 net-technik/202/64 net-yolo/208/64 net-infojurte/209/64 net-internation/210/64 net-programmtre/211/64 net-open-office/212/64
+        ia_pd 1/::/56 net-technik-iot/151/64 net-ikt/201/64 net-technik/202/64 net-yolo/208/64 net-infojurte/209/64 net-internation/210/64 net-programmtre/211/64 net-open-office/212/64
     '';
   };
 }