Remove duplicates from all interfaces list

jstasiak · jstasiak · commit af5e363e7fcb · 2015-02-05T00:44:20.000+01:00
It has been mentioned in GH python-zeroconf#12 that the list of all machine's network interfaces can contain duplicates; it shouldn't break anything but there's no need to open multiple sockets in such case.
diff --git a/zeroconf.py b/zeroconf.py
@@ -1205,12 +1205,12 @@ class InterfaceChoice(enum.Enum):
 
 
 def get_all_addresses(address_family):
-    return [
+    return list(set(
         addr['addr']
         for iface in netifaces.interfaces()
         for addr in netifaces.ifaddresses(iface).get(address_family, [])
         if addr.get('netmask') != HOST_ONLY_NETWORK_MASK
-    ]
+    ))
 
 
 def normalize_interface_choice(choice, address_family):
