The issue is that it may not work with all NAT boxes -- the UPnP Microsoft design is quite crappy and implementations differ slightly, and of course we cannot simply test against "all" NAT boxes out there. You can go into the src/transports/upnp/ directory and run "make check" to see if UPnP works with your NAT. If your NAT claims to support UPnP and it does not work, please report this (with model name and contact information) to GNUnet's Mantis bugtracking system and maybe we can find a way to make it work.
If your NAT works with GNUnet, all you have to do is enable the use of UPnP in the configuration file. Christian -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]

