Re: TCP/IP weirdness with two eth cards

From: Jan Evert van Grootheest (janevert@iae.nl)
Date: Wed May 03 2000 - 01:58:25 EST


Ed,

How do you start telnet?
Try the IP numbers instead of hostnames. I'd guess that with the eth0
cable out, telnet 192.168.1.2 would be `slow' and telnet 10.10.1.2 would
be normal.

-- Jan Evert

Ed Carp wrote:
>
> I'm running 2.0.30 (PPC), have two network cards in a box. One is 192.168.1.1, the other is 10.10.1.1. Routes are set appropriately (per-host).
> For host #1, eth0=192.168.1.1, eth1=10.10.1.1.
>
> Host #2 is set up the same way, except that eth0=192.168.1.2, eth1=10.10.1.2.
>
> Here's the weirdness. If I pull the cable from eth0 on the first box, then try to either telnet or ftp to the second box, I get a connect, then I have a 2-3 minute pause until I get a login: prompt. When I use netstat to look at box #2, I see that there are 1000+ characters in the receive queue, but telnetd hasn't pulled them out of the queue. If I reconnect the ethernet cable to eth0, it works fine.
>
> The real strangeness is that the manipulation is going on with eth0, and the packets are being routed out on eth1!
>
> Any ideas?
>
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