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Newsgroups: comp.os.386bsd.bugs Path: sserve!newshost.anu.edu.au!munnari.oz.au!constellation!osuunx.ucc.okstate.edu!moe.ksu.ksu.edu!crcnis1.unl.edu!wupost!howland.reston.ans.net!xlink.net!fauern!imp.ch!chsun!bernina!torda From: torda@igc.ethz.ch (Andrew Torda) Subject: Peculiar SLIP/serial line hang Message-ID: <CCqqxG.3Cs@bernina.ethz.ch> Sender: news@bernina.ethz.ch (USENET News System) Nntp-Posting-Host: hermitage Organization: Computational Chemistry, ETH, Zuerich Date: Thu, 2 Sep 1993 19:17:39 GMT Lines: 20 I have a small problem with using slip. It was more common with 386BSD, but still happens with NetBSD 0.9. If I send a boatload of data over the slip line (like an ftp transfer) eventually I will get a com0 silo overflow. No surprise. Some time afterwards, packets will stop moving between my machine and the other end. This is quite clear from the lack of activity and the lack of flashing lights on the modem. Now, the interesting and reproducible part. If I then, open the serial port with another process (like tip directly to the port), there is a flurry of activity and slip packets move again. I am so baffled, I don't even know where to start looking for an explanation for this behaviour. -Andrew -- Andrew Torda, Computational Chemistry, ETH, Zurich, torda@igc.ethz.ch