ipv6-tunnel: migrate to systemd-networkd

salt-pillar/upstream/upstream2.sls

@@ -12,5 +12,5 @@ port-forwarding:
 
 ipv6-tunnel:
   endpoint: 216.66.80.30
-  address: 2001:470:1f0a:12b2::2
+  address: 2001:470:1f0a:12b2::2/64
   gateway: 2001:470:1f0a:12b2::1

salt/upstream/ipv6-tunnel.conf

@@ -1,7 +0,0 @@
-auto ipv6
-iface ipv6 inet6 v4tunnel
-        address {{ address }}
-        netmask 64
-        endpoint {{ endpoint }}
-        ttl 255
-        gateway {{ gateway }}

salt/upstream/ipv6-tunnel.sls

@@ -1,18 +1,36 @@
 ifupdown:
   pkg.installed: []
 
-/etc/network/interfaces.d/ipv6-tunnel.conf:
-  file.managed:
-    - source: salt://upstream/ipv6-tunnel.conf
-    - template: 'jinja'
-    - context:
-        endpoint: {{ pillar['ipv6-tunnel'].get('endpoint') }}
-        address: {{ pillar['ipv6-tunnel'].get('address') }}
-        gateway: {{ pillar['ipv6-tunnel'].get('gateway') }}
-    - require:
-        - pkg: ifupdown
+/etc/systemd/network/ipv6.netdev:
+  file.append:
+    - text: |
+        [NetDev]
+        Name=ipv6
+        Kind=sit
+        [Tunnel]
+        Remote={{ pillar['ipv6-tunnel']['endpoint'] }}
 
-'ifdown ipv6; ifup ipv6':
-  cmd.run:
-    - onchanges:
-        - file: /etc/network/interfaces.d/ipv6-tunnel.conf
+/etc/systemd/network/ipv6.network:
+  file.append:
+    - text: |
+        [Match]
+        Name=ipv6
+        [Network]
+        Address={{ pillar['ipv6-tunnel']['address'] }}
+        Gateway={{ pillar['ipv6-tunnel']['gateway'] }}
+
+/etc/systemd/network/ipv6-up.network:
+  file.append:
+    - text: |
+        [Match]
+        Name={{ pillar['upstream']['interface'] }}
+        [Network]
+        Tunnel=ipv6
+
+systemd-networkd:
+  service:
+    - running
+    - watch:
+        - file: /etc/systemd/network/ipv6.netdev
+        - file: /etc/systemd/network/ipv6.network
+        - file: /etc/systemd/network/ipv6-up.network