On Tue, Nov 09, 2010 at 10:21:17PM -0800, Alain Durand wrote:
> This is, I'm sure, not the first DHCP option like this, why should we say
> anything special here?
As far as I am aware, the prescribed behavior by the two operators who
required the DNS-name format, that it be processed with the domain
search path, is in fact the first DHCPv6 option of its kind using this
format.
All other DHCPv6 options reference RFC 3315 section 8, which backreferences
to RFC 1035, which clearly stipulates that the zero label at the end of a
domain name string of labels indicates the location of the root label:
"Since every domain name ends with the null label of
the root, a domain name is terminated by a length byte of zero."
This is, in fact, new work. And it will not work with e.g. ISC DHCP
software (which will explicitly refer to the root label in wire->config
format exchanges: "aftr.example.com.") without hacks (intentionally
stripping the trailing dot in the AFTR software) or modifications
(changing ISC dhclient source code to do the same).
--
David W. Hankins "If you don't do it right the first time,
Network Mercenary you'll just have to do it again."
-- Jack T. Hankins
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