From mboxrd@z Thu Jan  1 00:00:00 1970
From: Pablo Neira Ayuso <pablo@netfilter.org>
Subject: Re: Possible arptables bug.
Date: Tue, 8 Jan 2013 11:50:48 +0100
Message-ID: <20130108105048.GA14926@1984>
References: <201301081032.53926.steven@springl.ukfsn.org>
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Cc: netfilter-devel@vger.kernel.org
To: Steven Jan Springl <steven@springl.ukfsn.org>
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On Tue, Jan 08, 2013 at 10:32:53AM +0000, Steven Jan Springl wrote:
> Hello
> 
> arptables-save tries to convert any IP addresses to DNS names.
> Is this the expected behaviour?
> 
> If it is the expected behaviour, is there any way that it can be disabled as
> arptables-save hangs until the DNS lookup times out if DNS is not available?

Like iptables, use -n together with -L.

BTW, please, for user oriented question user go to
netfilter@vger.kernel.org.