set default network mode to shared zone (and shared virtual bridge)

dspawn/cli.py

@@ -32,7 +32,7 @@ def main():
     parser.add_argument('-b', '--bind', metavar="/path/to/bind",
                         help='bind mount folder or device')
     parser.add_argument('-m', '--mode',
-                        default='private',
+                        default='zone',
                         choices=['private', 'zone', 'bridge'],
                         help='configure nspawn network; default: '
                         'containers cannot talk to each others')
@@ -56,7 +56,7 @@ def main():
         logger.setLevel(logging.DEBUG)
 
     if args.address and args.mode == 'private':
-        logger.info('auto-selecting zone network mode, required with static address')
+        logger.warning('private networking mode not supported with static address')
         args.mode = 'zone'
 
     if args.action == 'create' or args.action == 'config':