support ipv6 network configuration

network/defaults.yaml

   interfaces:
     pkgs: []
     default_values:
-      enable: True
-      proto: dhcp
+      enabled: True
       type: eth
     params_supported:
+      - proto
       - ipaddr
       - gateway
       - netmask
       - mode
       - slaves
       #TODO - broadcast
+      # IPV6
+      - enable_ipv6
+      - ipv6proto
+      - ipv6ipaddr
+      - ipv6netmask
+      - ipv6gateway
     def_entries:
       - name: lo
         proto: loopback
   interfaces:
     pkgs: []
     vlan_pkg: False
-    values:
-      enable: True
-      proto: dhcp
+    default_values:
+      enabled: True
       type: eth
     params_supported:
+      - proto
       - ipaddr
       - gateway
       - netmask
       - mode
       - slaves
       #TODO - broadcast
+      # IPV6
+      - enable_ipv6
+      - ipv6proto
+      - ipv6ipaddr
+      - ipv6netmask
+      - ipv6gateway
     def_entries: []
 #      - name: lo
 #        proto: none

network/interfaces.sls

 {% endif %}
 
 {% for n in interfaces %}
-network-{{ n.name }}:
+network_{{ n.name }}:
   network:
     - managed
     - name: {{ n.name }}
-    - enabled: {{ n.enable|default(datamap.interfaces.default_values.enable) }}
-    - proto: {{ n.proto|default(datamap.interfaces.default_values.proto) }}
+    - enabled: {{ n.enabled|default(datamap.interfaces.default_values.enabled) }}
     - type: {{ n.type|default(datamap.interfaces.default_values.type) }}
   {% for p in datamap.interfaces.params_supported %}
     {{ set_p(p, n) }}
   {% if n.use is defined %}
     - use:
       {% for u in n.use %}
-      - network: network-{{ u }}
+      - network: network_{{ u }}
       {% endfor %}
   {% endif %}
   {% if n.provider is defined %}

pillar.example.sls

       ipaddr: 192.168.2.31
       netmask: 255.255.255.0
       gateway: 192.168.2.1
+      enable_ipv6: True
+      ipv6proto: static
+      ipv6ipaddr: '2a03:4000:c:100::a'
+      ipv6netmask: 64
+      ipv6gateway: 'fe80::1'
 
   resolver:
     domain: domain.local