parallel.util: Use utils.localinterfaces

... for LOCALHOST and PUBLIC_IPS.

IPython/parallel/util.py

@@ -43,6 +43,7 b' from IPython.external.decorator import decorator'
 
 # IPython imports
 from IPython.config.application import Application
+from IPython.utils.localinterfaces import LOCALHOST, PUBLIC_IPS
 from IPython.zmq.log import EnginePUBHandler
 from IPython.zmq.serialize import (
     unserialize_object, serialize_object, pack_apply_message, unpack_apply_message
@@ -186,14 +187,9 b' def disambiguate_ip_address(ip, location=None):'
     """turn multi-ip interfaces '0.0.0.0' and '*' into connectable
     ones, based on the location (default interpretation of location is localhost)."""
     if ip in ('0.0.0.0', '*'):
-        try:
-            external_ips = socket.gethostbyname_ex(socket.gethostname())[2]
-        except (socket.gaierror, IndexError):
-            # couldn't identify this machine, assume localhost
-            external_ips = []
-        if location is None or location in external_ips or not external_ips:
+        if location is None or location in PUBLIC_IPS or not PUBLIC_IPS:
             # If location is unspecified or cannot be determined, assume local
-            ip='127.0.0.1'
+            ip = LOCALHOST
         elif location:
             return location
     return ip