Allow for specifying networks to look for free IP addresses in

Author: TuxPowered42

adminapi/dataset.py

@@ -208,8 +208,9 @@ def get_network_ip_addrs(self, attr='intern_ip'):
             if isinstance(addr, (IPv4Network, IPv6Network)):
                 yield addr
 
-    def get_free_ip_addrs(self, attr='intern_ip'):
-        networks = list(self.get_network_ip_addrs(attr))
+    def get_free_ip_addrs(self, attr='intern_ip', networks=None):
+        if networks is None:
+            networks = list(self.get_network_ip_addrs(attr))
         if not networks:
             raise DatasetError('No networks')