Re: pf scrub modifying IP header without fixing checksum

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02-22-2008, 12:10 PM

Jon Hart

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Re: pf scrub modifying IP header without fixing checksum

On Wed, Mar 08, 2006 at 05:33:28PM +0100, Daniel Hartmeier wrote:
> See http://www.freebsd.org/cgi/query-pr.cgi?pr=93849 for background.
>
> Max' patch is correct, but there are other modifications which also
> require checksum fixing, unless I'm mistaken.
>
> I suggest the patch below. Proof-reading and testing welcome

Any reason to believe this problem shows itself on non-bridged setups?
I've had an intermittent problem on a 3.8-current box from october where
packets are dropped because of invalid checksums. Up until now, I've
suspected faulty cards, cables or setups on the sending machines (Debian
with 2.4 kernel).

My setup scrubs in and out, hence my question on whether this would work
in setups other than bridged.

-jon

« [patch] ksh: switch to bracktype(char) | Re: reentrant variants of gethostbyname2/gethostbyaddr »

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Re: pf scrub modifying IP header without fixing checksum