In
<198A730C2044DE4A96749D13E167AD375A2AB9(_at_)MOU1WNEXMB04(_dot_)vcorp(_dot_)ad(_dot_)vrsn(_dot_)com>
"Hallam-Baker, Phillip" <pbaker(_at_)verisign(_dot_)com> writes:
[PHB brainstorms about a new protocol...]
The main objection to prefixed records is that they do not work with
wildcards. This is actually a failure of imagination rather than fact.
It is quite possible to develop a resolution procedure for prefix
records that works acceptably with legacy DNS resolvers and meets the
needs of network admins.
[...]
The way to do this is to introduce a pointer record using CNAME as
follows:
_prefix.exists.example.com TXT "Policy1"
*.example.com CNAME _wildcard.example.com
_prefix._wildcard.example.com TXT "Policy2"
I don't believe this will work since CNAMEs have to be the only thing
in a given node, and so a wildcard CNAME would conflict with all other
wildcard usage, such as wildcard MX records.
-wayne
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