kea.py: add v6_interfaces

_modules/kea.py

@@ -14,3 +14,13 @@ def rfc3397(domains):
             map(lambda dom: chr(len(dom)) + dom, domain.strip().split('.'))
         ) + "\0"
     return domain_list.encode('utf-8').hex()
+
+def v6_interfaces():
+    interfaces = []
+    for domain_key, domain in __salt__['pillar.get']('domains').items():
+        if 'IPv6' in domain:
+            interfaces.append(domain_key + "-br")
+    for subnet in __salt__['pillar.get']('kea-dhcp:v6:subnets'):
+        if 'interface' in subnet:
+            interfaces.append(subnet.interface)
+    return list(set((__salt__['pillar.get']('kea-dhcp:v6:interfaces', []) + interfaces).sort()))