Date: Mon, 29 Jan 2007 20:25:27 +0200 From: Alexander Motin <mav@alkar.net> To: Nikos Vassiliadis <nvass@teledomenet.gr> Cc: net@freebsd.org Subject: Re: ng_pptpgre problems: tcp connections reset unexpectedly Message-ID: <45BE3C17.3070606@alkar.net> In-Reply-To: <1170080583.00678976.1170067803@10.7.7.3> References: <1169850194.00677461.1169839202@10.7.7.3> <1169882591.00677647.1169870401@10.7.7.3> <1170080583.00678976.1170067803@10.7.7.3>
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Nikos Vassiliadis wrote: > I already have an mpd4 installation working, > but had some problems using pptp with it. I will try again with > the RC you just released. It is released now. And if you will have there any problems, they must be fixed before next release. So inform me. >>I do not use pptp actively, to say for sure, but you can try to play >>with such pptp options like delayed-ack, always-ack and windowing. > 4) >> delayed-ack disable >> always-ack enable >> windowing disable > > seem to work, sometimes it's not that easy to > reproduce the problem. >>Looking here I can see that it is your local machine (213.142.137.253) >>sent "R" - Reset request just after normal acknowledge packet. I don't >>see the reason for such it's behaviour. > > To complicate things a bit more sftp over the same the link works reliably > (different sockopts?). http fails, ftp fails but sftp works as usual. > > Eventually a read(2) fails: > 1794 fetch CALL read(0x3,0x8057730,0xd0) > 1794 fetch RET read -1 errno 60 Operation timed out Strange result IMHO for reading from TCP socket. I will try to investigate this. > It seems to work with disabled windowing. If you are interested in > tracking down this, I would be glad to help. I will try to look into it. If you will have some more interesting results send them to me. -- Alexander Motin mav@alkar.net Optima Telecom
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