diff -r dc081e31501e -r bc864c80ec36 cubicweb/etwist/twconfig.py
--- a/cubicweb/etwist/twconfig.py	Wed Oct 12 17:03:02 2016 +0200
+++ b/cubicweb/etwist/twconfig.py	Fri Oct 21 18:03:06 2016 +0200
@@ -44,7 +44,7 @@
           }),
         ('interface',
          {'type' : 'string',
-          'default': "",
+          'default': '0.0.0.0',
           'help': 'http server address on which to listen (default to everywhere)',
           'group': 'web', 'level': 1,
           }),