Re: Sense of the WG: mDNS configuration?

Robert Elz <kre@munnari.OZ.AU> Sun, 19 August 2001 10:28 UTC

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From: Robert Elz <kre@munnari.OZ.AU>
To: Bernard Aboba <aboba@internaut.com>
cc: namedroppers@psg.com
Subject: Re: Sense of the WG: mDNS configuration?
In-Reply-To: <Pine.BSF.4.21.0108181710440.14159-100000@internaut.com>
References: <Pine.BSF.4.21.0108181710440.14159-100000@internaut.com>
Date: Sun, 19 Aug 2001 15:11:41 +0700
Message-ID: <1134.998208701@brandenburg.cs.mu.OZ.AU>
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    Date:        Sat, 18 Aug 2001 17:16:29 -0700 (PDT)
    From:        Bernard Aboba <aboba@internaut.com>
    Message-ID:  <Pine.BSF.4.21.0108181710440.14159-100000@internaut.com>

  |       Domain Searchlist (draft-aboba-dhc-domsearch-05.txt)
  |       mDNS enable (draft-guttman-dhc-mdns-enable-01.txt)
  |       Name Service Searchlist (RFC 2937)

Either of the latter two - the mdns-enable option is basically just
a special case of 2937, in a sense - but as I read 2937, it would need
another DNS option defined anyway, so its option number can be used in
the 2937 option (there's no current dhcp option giving the addresses
of the servers for mDNS .. for obvious reasons).

That is, adapting 2937 is probably more work than it is worth, so mdns-enable
is probably the better choice.

dhc-domsearch (with the magic string) is just wrong - overloads an option
with a totally irrelevant meaning.

And for itojun - none of these assume the existence of a dhcp server,
merely that if it does exist, then it can be used to configure nodes.

dhc-domsearch is basically setting the search line of resolv.conf and
the other two, the hosts line of nsswitch.conf (from a NetBSD perspective,
which I'm sure you understand).   When there's no dhcp server, those can
be configured manually (or simply default to whatever the OS vendor
decides is best - perhaps based upon an IETF recommendation).

kre



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