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Thu May 31 14:02:12 UTC 2007

Thus spake "Randy Bush" <randy at psg.com>
> small site.  so public servers provide multiple and diverse
> services.  if a hostname has a v6 address, then all services
> must be v6 capable because clients do not retry the A record.

This seems to argue for having "service" hostnames, which has been standard 
practice at many sites for a long, long time.  For instance, if you have a 
single box which does mail and news, and you have v6 mail but only v4 news, 
then mail.example.com should have both A and AAAA records but 
news.example.com should have A records only.

(Yes, this means you can't just CNAME the service hostname to the real 
hostname, but there are several other strategies.)

S

Stephen Sprunk      "Those people who think they know everything
CCIE #3723         are a great annoyance to those of us who do."
K5SSS                                             --Isaac Asimov 