fix: unbound interface naming

roles/unbound/defaults/main.yml

@@ -9,9 +9,14 @@ unbound_custom_vpn_config_path: "{{ unbound_config_base_path }}/vpn.conf"
 unbound_custom_lan_domain: "example.lan"
 unbound_port: 53
 unbound_apparmor_profile_path: /etc/apparmor.d/usr.sbin.unbound
+
+unbound_interface_lan: 192.168.1.1
+unbound_interface_vpn: 192.168.27.1
+
 unbound_firewall_allowed_sources:
   - { src: "192.168.1.0/24", comment: "DNS from LAN" }
   - { src: "192.168.27.0/27", comment: "DNS from VPN" }
+
 unbound_custom_lan_records:
   "example.lan":
     v4: 192.168.1.2

roles/unbound/templates/unbound.conf.j2

@@ -8,13 +8,13 @@ server:
     # listening port
     port: {{ unbound_port }}
 
-    # Allow binding to interfaces that don't exist yet (e.g., WireGuard at boot)
+    # Allow binding to IP addresses that don't exist yet (e.g., WireGuard at boot)
     ip-freebind: yes
 
-    # Define interfaces binds
-    interface: lo
-    interface: lan0
-    interface: wg0
+    # Define interface binds by IP address
+    interface: 127.0.0.1                      # lo
+    interface: {{ unbound_interface_lan }}    # lan0
+    interface: {{ unbound_interface_vpn }}    # wg0
 
     # Define access controls (note that ufw might be also configured)
     access-control: 0.0.0.0/0 refuse