Re: libnetfilter_queue conditions required to rewrite packets...

[Mike Auty <mike.auty@xxxxxxxxx>]

Ok,
	So yesterday I needed to use a small program to rewrite packets flowing 
through my transparent bridge.  I started using the an ipq 
implementation and after a bit of jiggery pokery fixing up all the 
checksums, it seemed to be working a treat.  I then knocked up an 
nfqueue implementation using the code I'd been writing that did exactly 
the same job, and using the the subversion copies of libnetfilter_queue 
(0.0.12) and libnfnetlink (0.0.16), I did manage to mangle the packets 
successfully...
	I still don't seem to be able to send out packets with a broken 
checksum, but I haven't yet verified whether that's the target end 
dropping them or the linux kernel killing them before they get on the 
wire.  I hope this helps...
	Mike  5:)