made a little progress, but networking still fails

roles/network/tasks/main.yaml

@@ -1,14 +1,22 @@
 ---
-- name: Add lo1 interface
+- name: Add bridge interface
   community.general.sysrc:
     name: cloned_interfaces
     state: value_present
-    value: "lo1"
+    value: "bridge0"
 
-- name: Name lo1 interface bastille0
+- name: Setup bridge interface
   community.general.sysrc:
-    name: ifconfig_lo1_name
-    value: "bastille0"
+    name: ifconfig_bridge0
+    state: value_present
+    value: "up"
   notify: netif cloneup
 
+- name: Setup bridge interface ipv6
+  community.general.sysrc:
+    name: ifconfig_bridge0_ipv6
+    state: value_present
+    value: "inet6 auto_linklocal"
+  notify: netif cloneup
+  
 - meta: flush_handlers

roles/pubnix/tasks/main.yaml

@@ -28,8 +28,12 @@
     extra_zfs_properties:
       mountpoint: /data/home
 
+- name: determine ipv6 address
+  shell: ifconfig vtnet0 inet6 | awk '{ if (/2a01/) { sub(/::.$/, "::2", $2); print $2 }}'
+  register: jailip
+      
 - name: create jail
-  shell: "bastille create {{ role_name }} {{ release }} {{ jails[role_name] }}"
+  shell: "bastille create -V {{ role_name }} {{ release }} {{ jailip.stdout }}/64 vtnet0"
   args:
     creates: /usr/local/bastille/jails/{{ role_name }}