diff --git a/playbooks/knotd.yml b/playbooks/knotd.yml
index 075aa64..c194826 100755
--- a/playbooks/knotd.yml
+++ b/playbooks/knotd.yml
@@ -319,7 +319,7 @@
             - "2a09:6840:132:1:3::"
           ns-master.int:
             - 10.128.0.110
-            - "2a09:6840:128:0::110"
+            - 2a09:6840:128:0::110
           ec-1.ups:
             - 10.131.4.1
             - 2a09:6840:131::4:1
@@ -335,6 +335,9 @@
           dns-1.int:
             - 10.128.0.127
             - 2a09:6840:128::127
+          isp-1.rtr:
+            - 10.128.0.255
+            - 2a09:6840:128::255
       isp.auro.re:
         dnssec_policy: infra
         notify: