From mboxrd@z Thu Jan  1 00:00:00 1970
From: Patrick McHardy <kaber@trash.net>
Subject: Re: xtables Re: Hacking iptables 1.3.5 for 2.6.17
Date: Fri, 30 Jun 2006 18:37:12 +0200
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To: Amin Azez <azez@ufomechanic.net>
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Amin Azez wrote:
> iptables -Z dsrateentries -t mangle
> 
> causes the checkentry to all be called again.
> (It just so happens I was doing that every 10 seconds)
> 
> I guess iptables -z is not as lightweight as I thought, it perhaps
> re-applies all the rules - or maybe checkentry is wrongly being called
> from -z?

I'm actually not sure how this is implemented, I guess it just
dumps the ruleset to userspace, changes counters and pumps
it back to the kernel again (which means it needs to be revalidated).