[dns-operations] Can a 1s TTL cause weird failures?
Mark_Andrews at isc.org
Tue Jun 5 04:39:29 UTC 2007
> Mark Andrews wrote:
> > BIND 8 doesn't have query restart. Upgrade.
> I'm sorry, I don't know what "query restart" is.
BIND 8 uses UDP query retransmissions to restart the query
process after fetching glue. BIND 9 just restarts the
original query processing. In the time between retransmissions
the glue expires.
You can use a forward zone to work around this but not this
solution does not scale. It also requires regular checking
to follow delegation / nameserver address changes.
> In addition, upgrading
> to BIND 9 is on our road map but this problem is happening now. As a
> large organization we can't just upgrade servers at the drop of a hat,
> much as I might like to. :)
BIND 8 was declared dead 6-7 years ago. Yes, I know there were
releases after that, in particular IPv6 support w/ 8.4.x. None
of these fixed the fundemental problems w/ BIND 8.
> Are you contending that "query restart" is some kind of feature missing
> from BIND 8 that is causing this problem?
It was a known problem in BIND 8 that was addressed with BIND 9.
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742 INTERNET: Mark_Andrews at isc.org
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