[klibc] PATCH: ipconfig may discard useful packets

maximilian attems maks at debian.org
Mon Jul 14 05:16:02 PDT 2008

On Mon, 16 Jun 2008, Άλκης Γεωργόπουλος wrote:

> I'm sending same debug output samples to demonstrate the problem.
> In the places where I say "the older version lost an ACK", I had
> wireshark running on the ltsp server to see it.
> I think there's ***ANOTHER*** problem as well, ipconfig considers
> receiving IGMP or ARP packets an error, and this causes rare but
> large delays (I got about 5 of them in 30 minutes of testing).
> I'll look into that afterwards, if you'll allow me.
> The debug output files are from 3 different versions:
> ipconfig-1.5.10  = the original unmodified version,
> ipconfig-git = the one in git right now,
> ipconfig-1.5.10-patched = with the patch proposed in this thread.
> Test environment:
> an adsl router/dhcp server =,
> a laptop/LTSP server/dhcp server =

tried to reproduce it on our network on sunday,
calm day with less traffic.

but couldn't reproduce it, maybe beacause the always running dhcpd
is faster and nearer or because he is authorative?
the patch looks a bit scary for me as touches quite a lot
return functions but haven't looked at the grand picture yet.

kind regards


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