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

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Message-ID: <OFB5D50B53.A24A00A2-ON88257303.0017FE53-88257303.0018AD5D@us.ibm.com>
Date:	Fri, 22 Jun 2007 21:30:05 -0700
From:	David Stevens <dlstevens@...ibm.com>
To:	Simon Arlott <simon@...e.lp0.eu>
Cc:	"C. Scott Ananian" <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

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.

                                                                +-DLS

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