Re: 2.6.9 NAT problem

From: Giuliano Pochini
Date: Tue Dec 14 2004 - 16:29:23 EST




On Tue, 14 Dec 2004, Martin Josefsson wrote:

> 2.6.9 contains a large update to the connectiontracking code. One thing
> that was changed is that it now verifies the checksum of tcp and udp
> packets. I know of at least one user who has been bitten by this and what
> looks like a broken sungem NIC.
>
> Could you please try this:
>
> modprobe ipt_LOG
> echo 255 > /proc/sys/net/ipv4/netfilter/ip_conntrack_log_invalid
>
> Then try again and then check the kernellog by executing 'dmesg', see if
> it complains about bad checksums.

Yes :(


--
Giuliano.
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