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Date: Wed, 17 Mar 2010 16:13:16 +0000
From: Jamie Lokier <jamie@shareable.org>
Subject: Re: [Qemu-devel] [PATCH] better describe -net options
Message-ID: <20100317161316.GA19158@shareable.org>
References: <9cd4c8fc1003051307o5cf65642rd065d0da5f75c901@mail.gmail.com>
	<4BA0F601.4060802@codemonkey.ws>
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To: Anthony Liguori <anthony@codemonkey.ws>
Cc: qemu-devel@nongnu.org, Brian Thomason <brian.thomason@canonical.com>

Anthony Liguori wrote:
> 
>    On 03/05/2010 03:07 PM, Brian Thomason wrote:
> 
>      The manpage reflects that multiple -net user calls may be made,
>      but if this is done, it can cause the program to hang. Instead,
>      multiple -net calls can be combined into one, and this patch adds
>      that information to qemu-options.hx. Also, -net user may only
>      be used in conjunction with -net nic.  This is already implcitly
>      stated, but this patch makes that statement more explicit.
> 
>    Actually, the problem is that the user created a loop.  It's actually
>    valid to have something like:
>    -net user -net dump,file=foo.pcap -net nic
>    But having -net user -net user creates a loop.

When I used -net user -net user, it didn't hang: QEMU crashed with a
stack overflow.

It crashed after a doing a successful full OS install, because
everything was fine until the first network packet.

That's not nice, even if it is user error.

-- Jamie