[Bug 5774] New: udp traffic stop working after a time for dht/utorrent and kademlia/emule

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=5774

Summary: udp traffic stop working after a time for dht/utorrent
                    and kademlia/emule
           Product: Wine
           Version: CVS
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: wine-net
        AssignedTo: [e-mail]
        ReportedBy: [e-mail]

After some times (from 30mins to several hours and even 1 or 2 days) , the udp
traffic for these applications aren't working anymore: with µtorrent
(http://www.utorrent.com/), the dht (the protocol using udp) doesnt work
anymore, the number of nodes connected reported starts decreasing until it
reaches zero and never increases again.
With emule (http://www.emule-project.net/) and kademlia it's the same problem,
kademlia (protocol using udp) gets disconnected after a while, and emule is
unable to reconnect to the network (stay in "trying" mode).
the output of netstat for that udp port is the folowing:
Proto Recv-Q Send-Q Local Address           Foreign Address         State      
PID/Program name   
udp   221064      0 0.0.0.0:10466           0.0.0.0:*                          
3281/wineserver

for the utorrent process the queue was around 1 mega

How to reproduce : for utorrent : install utorrent , launch it (make sure the
udp port is a reachable from internet) , the number of nodes (shown at the
bottom should start increasing, wait  some times until it reaches zero, dht
doesnt work anymore (you can test it by adding a torrent, and modify the tracker
to something bogus, to force the use of dht, but the torrent won't start
downloading)

for emule : download it, install it, make sure udp port is reachable from
internet, if it's the first time you might need to connect to a regular server
first, then start downloading something, then go to the kademlia page and click
connect. now wait a certain amount of time (no downloads are required during
this) , until kad get disconnected (the top right arrow goes from green to red
in the bottom right corner of the screen) . you can click bootstrap or connect
from the kademlia page, it wont work anymore.