Maintained by: NLnet Labs

[Unbound-users] dig fails intermittently, but unbound-host does not

Paul Wouters
Tue Mar 29 13:19:04 CEST 2011


On Tue, 29 Mar 2011, Andrew Hearn wrote:

> We have version 1.3.4 on a server and have an odd, intermittent, problem
> with looking up a particular record.
>
> We have other unbound and bind servers that don't have this problem.
>
> eg:
>
> [root at a log]# unbound-control flush farnell.com
> ok
> [root at a log]# dig uk.farnell.com @localhost

That domain seems broken, at least from the "world view":

[paul at bofh ~]$ dnscheck uk.farnell.com.
   0.000: uk.farnell.com. INFO Begin testing zone uk.farnell.com. with version 1.2.1.
   0.000: uk.farnell.com. INFO Begin testing delegation for uk.farnell.com..
   6.008: uk.farnell.com. INFO Name servers listed at parent: dns1.cscdns.net,dns2.cscdns.net
   6.168: uk.farnell.com. ERROR Failed to find name servers of uk.farnell.com./IN.
   6.168: uk.farnell.com. ERROR No name servers found at child.
   6.168: uk.farnell.com. INFO Done testing delegation for uk.farnell.com..
   6.168: uk.farnell.com. CRITICAL Fatal error in delegation for zone uk.farnell.com..
   6.168: uk.farnell.com. INFO Test completed for zone uk.farnell.com..

If it works internally, perhaps one issue is that one of your servers uses the external instead
of internal view?

Paul