Bind 9.4.2 and unit5.org
Mark_Andrews at isc.org
Thu May 15 23:28:39 UTC 2008
> On May 15 2008, Matus UHLAR - fantomas wrote:
> >On 15.05.08 01:43, Kevin Darcy wrote:
> >> Hmmm... I must admit I'm a little confused about this myself. It seems
> >> like 4 of the 6 TLD servers for .org do *not* provide the glue record
> >> for ns.unit5.org when (non-recursively) queried directly for it. But
> >> that glue record should be present in the parent zone, right? So why
> >> wouldn't they answer with it?
> >I just tried it and all 6 did return glue.
> For me, too. But the UltraDNS servers for .org notoriously use anycast
> (I'm not sure about the others) so we may be seeing different nameservers
> despite using the same IP address.
> Chris Thompson
> Email: cet1 at cam.ac.uk
Some of the org servers return the requested glue in the
answer section and some in the additional sectioni (which
is correct as the org servers are not authoritative for it).
All however returned glue for both nameservers.
I suspect that there is a broken router / nat / firewall
that is blocking the query / reply. The only way to see
this is to run a packet trace. Restart the nameserver
should help in this case provided that the query port is
not being set.
Note: this assumes that the test queries we saw were run
on the nameserver. If they were run on some other box then
all bets are off.
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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