Date: Sat, 1 Mar 1997 19:15:56 +0100 From: j@uriah.heep.sax.de (J Wunsch) To: freebsd-hackers@freebsd.org (FreeBSD hackers) Subject: truncated-ip - 101 bytes missing... Message-ID: <Mutt.19970301191556.j@uriah.heep.sax.de>
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I think we already had this discussion at some point. I've tried to fetch the linux_lib distfile from my closes mirror. After transferring 4019200 bytes, the transfer stalled. I tried to `reget' the file using a new ftp session, still fail. I ran tcpdump on the sl0 interface, and much to my surprise: 18:08:08.656147 truncated-ip - 101 bytes missing!141.30.61.11.20 > 193.175.26.65.40005: . 4225129474:4225129986(512) ack 4005312101 win 16384 [tos 0x8] 18:08:09.176515 truncated-ip - 101 bytes missing!141.30.61.11.20 > 193.175.26.65.40006: . 4245673474:4245673986(512) ack 4030228811 win 16384 [tos 0x8] 18:08:09.523537 truncated-ip - 91 bytes missing!137.226.31.2.20 > 193.175.26.65.40007: . 684563218:684563710(492) ack 4039732364 win 17280 <nop,nop,opt-8:00198b630011d018,eol,eol,eol,eol,eol,eol,eol,eol> (DF) [tos 0x8] 18:08:15.177871 truncated-ip - 101 bytes missing!141.30.61.11.20 > 193.175.26.65.40003: . 4186222594:4186223106(512) ack 3960042550 win 16384 [tos 0x8] The FTP server i ran this against was totally irrelevant, the above machine announces itself as AIX 3.2.5, but i've also tried to reget the file from ftp.de.freebsd.org (which i think is a FreeBSD machine). The SLIP interface ran with an MTU of 552. I stopped the SLIP session and started a PPP session -- everything's ok. Isn't it a little surprising that the above behaviour happens at exact the same spot in the file? -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)
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