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From: brian@shift.lan.awfulhak.org (Brian Somers)
Newsgroups: comp.unix.bsd.freebsd.misc
Subject: Re: 2.2-RELEASE + PLIP = problem
Date: 18 Mar 1997 16:47:13 GMT
Organization: Awfulhak Ltd.
Message-ID: <5gmguh$icd@ui-gate.utell.co.uk>
References: <5gm6f1$ukc@hecate.umd.edu>
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In article <5gm6f1$ukc@hecate.umd.edu>,
marat@Glue.umd.edu (Marat Fayzullin) writes:
> After installing 2.2-RELEASE on the laptop, I am no longer able to set up
> a PLIP connection properly. I have a 2.1.7-running gateway to which laptop
> is connected. After ifconfig and adding a route, I can reach the gateway
> and any FreeBSD machine on the local network, but neither AIX machines nor
> the router (MorningStar) respond. Has anyone had this problem? PLIP worked
> while there was 2.1.0-RELEASE on the laptop. Is there something different
> about routed and lp0 in this release?
>
> Marat
>
> PS: YES, I tried turning tcp_extensions off. It makes no difference.
There are lots of changes in lpt.c since 2.1.0 (routed doesn't have
anything to do with the packets, it just plays with where they're sent).
The only thing I can suggest is using the -link0 option.... but I
don't expect it will help.
The only time I've seen a similar thing is with bad ip checksums -
some OSs are lazy and ignore the IP sum for speed, but FreeBSD
has always (and still does in 2.2) dropped packets with bad sums.
What about pinging the laptop from the AIX box ? Try doing this
while running tcpdump on the lan interface on the FreeBSD gateway
(the one with the plip connection to the laptop). Do you see
the ping getting to the interface and the response coming back ?
Maybe the AIX box & MorningStar router havn't got routes to the
laptop through the FreeBSD router ???
--
Brian <brian@awfulhak.demon.co.uk> <brian@freebsd.org>
<http://www.awfulhak.demon.co.uk>
Don't _EVER_ lose your sense of humour !