home.router: add hosts entry for wireguard box

nodes/home/router.py

@@ -90,6 +90,15 @@ nodes['home.router'] = {
                 },
             },
         },
+        'hosts': {
+            'entries': {
+                # Hackaround to force wireguard to only use IPv4 for
+                # the connection to this system.
+                '51.195.47.180': {
+                    'wireguard.ovh.kunbox.net',
+                },
+            },
+        },
         'icinga_options': {
             # override group default
             'also_affected_by': atomic({