[4156] in linux-net channel archive
Re: linux router/fw problems (icmp, arp, rip)
daemon@ATHENA.MIT.EDU (Stewart Allen)
Thu Aug 22 23:30:02 1996
Date: Thu, 22 Aug 1996 22:03:01 -0400 (EDT)
From: Stewart Allen <stewart@neuron.com>
To: Alan Cox <alan@lxorguk.ukuu.org.uk>
cc: linux-net@vger.rutgers.edu
In-Reply-To: <m0utgcc-0005FbC@lightning.swansea.linux.org.uk>
On Thu, 22 Aug 1996, Alan Cox wrote:
> > Second, routed or gated (I've tried both) on linux seems to ignore all
> > route metrics when adding entries into the kernel (they always get a 0).
> > This seems to be a major problem on the Linux/Firewall (or it's how it
> > hands out ICMP redirects). Either way, it neither received or propogates
> > information correctly via RIP.
>
> The default gated build assumes Linux doesnt support metrics in route adds
> The 3.6.x gated should (if they got various people's notes) do metrics
> properly.
I'm running 3.6.Alpha1.
> As to ICMP redirects can you tcpdump the first failing outgoing session.
I have the dumps at work, but from memory, the only difference was that
the ICMP redirect from the Linux router contained a TOS field and the one
from the Cisco did not. The result was that the remote end actually sent
a RST packet and reset the connection. This doesn't happen the second
time (with the Linux router) and the connection succeeds. After some
timeout period that I haven't figured out yet, another telnet or attempted
connection will fail; the subsequent attempt will again succeed.
I will send the dumps tomorrow.
Thanks for the help.
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