diff --git a/hosts/monitoring-3/rules.yml b/hosts/monitoring-3/rules.yml
index 2493b04..bb0f5c9 100644
--- a/hosts/monitoring-3/rules.yml
+++ b/hosts/monitoring-3/rules.yml
@@ -87,3 +87,11 @@ groups:
     annotations:
       summary: "GPG {{ $labels.fingerprint }} is expiring soon"
       description: "GPG with fingerprint {{ $labels.fingerprint }} is expiring in less then six weeks"
+  - alert: NadjaTopIPv4ProxyBroken
+    expr: probe_success{job="blackbox_local_http6", target="blog.nadja.top"} != on (target) probe_success{job="blackbox_local_http4", target="blog.nadja.top"}
+    for: 5m
+    labels:
+      severity: critical
+    annotations:
+      summary: "blog.nadja.top unreachable via IPv4"
+      description: "blog.nadja.top unreachable IPv4, but reachable via IPv6"
diff --git a/modules/nginx-port-forward/default.nix b/modules/nginx-port-forward/default.nix
index 7a13859..014543f 100644
--- a/modules/nginx-port-forward/default.nix
+++ b/modules/nginx-port-forward/default.nix
@@ -9,7 +9,7 @@ let
 
   mkServerBlock = isUDP: port: forward: ''
     server {
-      resolver 127.0.0.53 ipv4=off;
+      resolver 127.0.0.53 ipv4=off valid=30s;
 
       listen ${port}${optionalString isUDP " udp"}${optionalString (forward.certName != null) " ssl"};
       listen [::]:${port}${optionalString isUDP " udp"}${optionalString (forward.certName != null) " ssl"};
diff --git a/pkgs/overrides/dino.nix b/pkgs/overrides/dino.nix
new file mode 100644
index 0000000..0952ada
--- /dev/null
+++ b/pkgs/overrides/dino.nix
@@ -0,0 +1,8 @@
+final: prev:
+prev.dino.overrideAttrs (finalAttrs: prevAttrs: {
+  mesonFlags = prevAttrs.mesonFlags ++ [
+    (final.lib.mesonEnable "plugin-openpgp" false)
+    (final.lib.mesonEnable "plugin-notification-sound" false)
+  ];
+})
+
diff --git a/pkgs/pkgs.nix b/pkgs/pkgs.nix
index ac6b08a..8e2c444 100644
--- a/pkgs/pkgs.nix
+++ b/pkgs/pkgs.nix
@@ -27,5 +27,6 @@
   update-from-hydra = final: prev: final.callPackage ./update-from-hydra {};
   uptimestatus = final: prev: final.python3.pkgs.callPackage ./uptimestatus {};
 
+  dino = final: prev: import ./overrides/dino.nix final prev;
   xmppc = final: prev: import ./overrides/xmppc.nix final prev;
 }