From mboxrd@z Thu Jan  1 00:00:00 1970
From: Jan Engelhardt <jengelh@medozas.de>
Subject: Re: [PATCH] iptables: fix the dead loop when meeting unknown
 options
Date: Thu, 14 Apr 2011 09:20:02 +0200 (CEST)
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Cc: Patrick McHardy <kaber@trash.net>, netfilter-devel@vger.kernel.org
To: Changli Gao <xiaosuo@gmail.com>
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On Monday 2011-03-14 07:23, Changli Gao wrote:

>Signed-off-by: Changli Gao <xiaosuo@gmail.com>
>---
> xshared.c |    2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>diff --git a/xshared.c b/xshared.c
>index 404a9f5..87402b4 100644
>--- a/xshared.c
>+++ b/xshared.c
>@@ -92,7 +92,7 @@ static bool should_load_proto(struct iptables_command_state *cs)
> 	if (find_proto(cs->protocol, XTF_DONT_LOAD,
> 	    cs->options & OPT_NUMERIC, NULL) == NULL)
> 		return true;
>-	return cs->proto_used;
>+	return !cs->proto_used;
> }

Could you, for completeness, give the command that causes the infinite 
loop?

thanks,
Jan