Date: Wed, 2 Oct 1996 15:15:52 +1000 (EST) From: Rowan Crowe <rowan@ozramp.net.au> To: bugs@FreeBSD.org Subject: Possible low level TCP bug Message-ID: <Pine.LNX.3.91.961002150345.9161A-200000@ozramp>
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[-- Attachment #1 --]
Hello,
I am a relative newcomer to FreeBSD. Firstly, let me say, I think it's a
great OS! I will be going online full time soon, and I'll be using a
FreeBSD box as my router.
I have noticed some strange behaviour with packets originating from a
FreeBSD box. I first saw this when connecting to an IRC server which uses
FreeBSD, and just before I saw it come from my own FreeBSD box.
The behaviour is this: seemingly small amounts of complete data (ie: a
line on IRC) are split into two packets, and are sent about a second
apart. The trace from my current router (not a FreeBSD box) shows this
behaviour. Note the first packet has the PSH attribute.
At most other times a complete set 500+ bytes is sent in one IP packet.
One idea I had: possibly some sort of circular buffer quirk. I don't
know anything about the internals of FreeBSD so this is a wild guess.
Hope this helps, or you can enlighten me on this seemingly strange
behaviour, if it's supposed to do that!
Regards,
Rowan Crowe
Melbourne Australia
[-- Attachment #2 --]
Wed Oct 02 14:50:51 1996 - pp0 sent:
PPP: len 107 protocol: VJ Compressed TCP/IP
changes: 0x1f TCP checksum: 0x5c61 PUSH
delta SEQ implied by length of data
increment ID
0000 PRIVMSG #Freebsd :.ACTION thinks a lot of fuss is being made ove
0040 r a small problem which is easily fi
Wed Oct 02 14:50:52 1996 - pp0 recv:
PPP: len 44 protocol: IP
IP: len 40 203.22.184.10->203.30.11.131 ihl 20 ttl 64 tos 8 prot TCP
TCP: 6667->1044 Seq x1fbc492a Ack x8dc33748 ACK Wnd 8576
Wed Oct 02 14:50:52 1996 - pp0 sent:
PPP: len 12 protocol: VJ Compressed TCP/IP
changes: 0x1f TCP checksum: 0xe2a4 PUSH
delta SEQ implied by length of data
increment ID
0000 xed..
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