netdev - Re: [RFD] First draft of RDNSS-in-RA support for IPv6 DNS autoconfiguration

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Message-Id: <20070622.221229.125566330.davem@davemloft.net>
Date:	Fri, 22 Jun 2007 22:12:29 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	dlstevens@...ibm.com
Cc:	simon@...e.lp0.eu, cscott@...top.org, netdev@...r.kernel.org,
	netdev-owner@...r.kernel.org
Subject: Re: [RFD] First draft of RDNSS-in-RA support for IPv6 DNS
 autoconfiguration

From: David Stevens <dlstevens@...ibm.com>
Date: Fri, 22 Jun 2007 21:30:05 -0700

> netdev-owner@...r.kernel.org wrote on 06/22/2007 06:17:46 PM:
> 
> > On 23/06/07 02:04, David Stevens wrote:
> > >         Why not make the application that writes resolv.conf
> > > also listen on a raw ICMPv6 socket? I don't believe you'd need
> > > any kernel changes, then, and it seems pretty simple and
> > > straightforward.
> > 
> > Because then it requires yet another network daemon, RA in 
> > the kernel means there's no need for one to manage adding 
> > auto-configured IP addresses... what's wrong with doing the 
> > same for DNS?
> 
>         It's not yet another one, since you have to run something
> to get it in resolv.conf, anyway. That seems much better to me
> than having the kernel track data that can only be used at the
> application layer. The app itself looks like it'd be really simple.
>         Auto-configured addresses are used by the kernel. It has to
> have those addresses. But the kernel doesn't do DNS look-ups, or
> write resolv.conf; that's the difference, for me.

I totally agree with David, this stuff definitely does not belong
in the kernel.
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