update caching nameserver immediately

[Will Yardley]

We have been using our authoritative nameservers for internal resolution
for quite some time. This is obviously not an ideal way of doing things,
but I've been working on gradually changing this for quite some time.

Our system makes certain assumptions based on the assumption that
internal hosts will resolve names based on a response from one of the
authoritative servers. There are certain cases where we shift something
internally, and it's important that the internal resolution updates
almost instantly.

It looks like BIND 2.3 will support "flushname", which may do what we
want (flush an individual zone from the cache). Is there any way,
however, to use the NOTIFY mechanism to flush a zone from the cache
automatically?

Any other way to make sure that zones are kept in sync with the
authoritative servers *without* configuring all of the zones as slaves
and without setting ridiculously low TTLs?

-- 
No copies, please.
To reply privately, simply reply; don't remove anything.