--- a/mercurial/commands.py	Fri Aug 27 16:25:47 2010 +0200
+++ b/mercurial/commands.py	Sat Aug 28 12:31:07 2010 -0400
@@ -3332,7 +3332,7 @@
 
     # this way we can check if something was given in the command-line
     if opts.get('port'):
-        opts['port'] = int(opts.get('port'))
+        opts['port'] = util.getport(opts.get('port'))
 
     baseui = repo and repo.baseui or ui
     optlist = ("name templates style address port prefix ipv6"