Re: IP forwarding broken in 2.1.16 ?

Neil Moore (amethyst@valjean.sfhs.floyd.k12.ky.us)
Fri, 20 Dec 1996 00:59:01 -0500


>
>
> I have a machine at work doing IP forwarding for a ppp dial-up connection.
> It provides Internet access for me from home, through the company token-
> ring network.
>
> Tonight, I had accidentally left 2.1.16 running on it - and it seems that
> forwarding does not work (I checked compile-options - forwarding is enabled).
>
> I can start a ppp connection to the machine; the machine can talk to both
> the "big" network and the ppp network, but no forwarding. tcpdump shows
> that the packets do arrive on the forwarding machine (tcpdump doesn't
> work on token-ring, unfortunately).
>
> Rebooting 2.0.27 (identical setup) and IP forwarding works. I suspect it
> is related to the new routing code, but if any more information is needed,
> feel free to ask. The problem is definitely reproducible.

Try 'echo 1 > /proc/sys/net/ipv4/ip_forwarding'. I had to do this to
get it working. On boot, the value is 2 -- does anyone know what this
means here?

-- 
-Neil Moore          http://www.sfhs.floyd.k12.ky.us/~amethyst
(finger amethyst@valjean.sfhs.floyd.k12.ky.us for my Geek Code)