feat: made pihole always reachable

headscale/config.yaml

@@ -245,6 +245,10 @@ dns_config:
   #
   #   # you can also put it in one line
   #   - { name: "prometheus.myvpn.example.com", type: "A", value: "100.64.0.3" }
+  extra_records:
+    - name: "pi.hole"
+      type: "A"
+      value: "100.64.0.4"
 
   # Whether to use [MagicDNS](https://tailscale.com/kb/1081/magicdns/).
   # Only works if there is at least a nameserver defined.