Wireguard: Hotfix non-v4-peerings

wireguard/files/dn42-interfaces-wireguard.j2

@@ -13,11 +13,22 @@ iface {{ iface_prefix }}_{{ peer.name }} inet static
     pre-up wg setconf $IFACE /etc/wg/$IFACE.conf
     address {{ peer.addr.local.ip4.address }}/31
     post-down ip link del dev $IFACE
-{%- endif %}
 
 {% if 'ip6' in peer.addr.local %}
 iface {{ iface_prefix }}_{{ peer.name }} inet6 static
     address {{ peer.addr.local.ip6.address }}/127
 {%- endif %}
+{%- elif %}
+# V6 only WG-Interface
+{% if 'ip6' in peer.addr.local %}
+iface {{ iface_prefix }}_{{ peer.name }} inet6 static
+    pre-up ip link add dev $IFACE type wireguard
+    pre-up wg setconf $IFACE /etc/wg/$IFACE.conf
+    post-down ip link del dev $IFACE
+    address {{ peer.addr.local.ip6.address }}/127
+{%- endif %}
+{%- endif %}
+
+
 
 {% endfor %}