At 4/21/02 4:21 AM, Jonathan McDowell wrote:
>No. I want glue records for my .uk nameservers under my .com/.net/.org
>domains.
Oh. Well, as William pointed out, that is a bad idea. The correct way to
do that is to give each domain nameservers within its "bailiwick", not to
pollute all the TLD zones with unnecessary glue records. If you add .uk
glue records to the .com zone files, where do you stop? You end up with
every TLD zone knowing internal things about every other TLD, and
everyone having to coordinate host record changes with each other. It
would create an extra layer of bureaucracy and coordination to implement
something that's unnecessary from a technical perspective.
The correct thing to do, if you really care about this, is to give your
.com/.net/.org domains .com/.net/.org nameservers. I assume you haven't
done that because you don't have enough IP addresses to give your
.com/.net/.org nameservers their own IPs, because your next comment was:
>Or the ability to point any number of nameserver names to the
>same IP address.
You can do that now -- the registry has removed the limitation. I was
just able to create a ".net" nameserver host with the same IP address as
ns1.demon.co.uk, for example. (I also successfully tested a .com host
with the same IP address as an existing .com nameserver: intra-TLD
duplicates work fine, too.)
>I haven't seen anything that's said it's a bad idea other than for
>nameservers you don't control, rather than in a TLD situation.
RFC 1537 and RFC 1912 both say it's a bad idea for any zone, for the
simple reason that the information in foreign glue tends to get out of
sync with the real information. Old versions of BIND could even propagate
the bad glue records to other servers. According to RFC 1912, current
versions of BIND simply ignore unnecessary ("out-of-bailiwick") glue, so
TLD administrators couldn't usefully add it to BIND-based TLD servers
even if they wanted to.
--
Robert L Mathews, Tiger Technologies
"The trouble with doing something right the first time is that nobody
appreciates how difficult it was."
