Re: netfilter/iptables bug ?

Martin Josefsson (gandalf@wlug.westbo.se)
02 Apr 2003 00:51:22 +0200


On Wed, 2003-04-02 at 00:44, J.A. Magallon wrote:
> Hi all...
>
> I'm trying to do NAT from a internal eth1 to external eth0 (connected
> with a cable modem). Every doc I read says I should do:
>
> iptables -t nat -A POSTROUTING -o eth0 -j MASQUERADE
>
> But I just keep getting:
>
> iptables: Invalid argument
>
> Kernel: 2.4.21-pre6 + -pre5-aa. iptables 1.2.7a.

Recompile iptables against your new kernel.
A major NAT patch (newnat) went into 2.4.20 which changed a lot of
structures. A recompile against a >= 2.4.20 kernel will get it working
again.

I suggest that you post further mail about iptables-problems to
netfilter@lists.netfilter.org as that's where you are most likely to get
help.

-- 
/Martin
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