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[coLinux-devel] [ colinux-Bugs-1995862 ] udp forwarded packets over slirp have incorrect source ip
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From: SourceForge.net <no...@so...> - 2008-06-27 20:39:22
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Bugs item #1995862, was opened at 2008-06-17 11:33 Message generated for change (Comment added) made by henryn You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=622063&aid=1995862&group_id=98788 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: None >Group: v0.7.x (release) >Status: Closed >Resolution: Fixed Priority: 5 Private: No Submitted By: Mike Frysinger (vapier) Assigned to: Nobody/Anonymous (nobody) Summary: udp forwarded packets over slirp have incorrect source ip Initial Comment: after upgrading from coLinux 0.7.1 to 0.7.3, my TFTP connection failed. the coLinux setup is: eth0=slirp,,tcp:22:22/tcp:333:22/tcp:10000:10000/udp:69:69 connecting from an external machine (named "G5") to the windows machine which forwards port 69 (tftp) to the colinux system which is running a tftp server running tcpdump against 0.7.1 shows: 01:34:47.410000 IP G5.60808 > 10.0.2.15.tftp: 15 RRQ "moo" netascii running tcpdump against 0.7.3 shows: 01:44:45.645802 IP 10.0.2.2.33431 > 10.0.2.15.tftp: 15 RRQ "moo" netascii for some reason the forwarded packet had the source IP changed from the real external machine (G5) to the windows' side of the slirp tunnel (10.0.2.2). this means the tftp server then attempts to reply to "10.0.2.2" instead of "G5" and things obviously fail. merely replacing 'colinux-slirp-net-daemon.exe' in 0.7.3 with the version from 0.7.1 allows things to work as expected under 0.7.3 tcp forwarded packets work with both versions though, so it seems like a udp-specific issue ? ---------------------------------------------------------------------- >Comment By: Henry N. (henryn) Date: 2008-06-27 22:39 Message: Logged In: YES user_id=579204 Originator: NO Some lines in source was missing to change between SVN revisions 479 and 480, you have mailed me. Many thanks for your details. Bug has been fixed in SVN revision 1060 (stable) and 1061 (devel) now. An update colinux-slirp-net-daemon-0.7.3-2.zip is available from SF file releases: http://downloads.sourceforge.net/colinux/coLinux-0.7.2-src.tar.gz?download ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=622063&aid=1995862&group_id=98788 |