From mboxrd@z Thu Jan  1 00:00:00 1970
From: Ken-ichirou MATSUZAWA <chamaken@gmail.com>
Subject: Re: [RFC PATCH 1/1 libnetfilter_conntrack] zero value handling of
 mark and zone
Date: Mon, 16 Jun 2014 22:20:53 +0900
Message-ID: <20140616131931.GA29940@gmail.com>
References: <20140616114154.GI1982@breakpoint.cc>
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	<netfilter-devel@vger.kernel.org>,
	Pablo Neira Ayuso <pablo@netfilter.org>
To: Florian Westphal <fw@strlen.de>
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Sorry for lack of explanation.

On Mon, Jun 16, 2014 at 01:41:54PM +0200, Florian Westphal wrote:
> So, if only ct2 has attr:
> nfct_get_attr_u16(ct1, ATTR_ZONE) -> returns 0
> nfct_get_attr_u16(ct2, ATTR_ZONE) -> returns the zone id
> 
> ct1 and ct2 would be equal if ct2 zone is 0.

And nfct_cmp(ct1, ct2, NFCT_CMP_MASK) is expected to return
true if ct2 zone is not 0.