Maintained by: NLnet Labs

[Unbound-users] caching in case of unreachable NSes

W.C.A. Wijngaards
Tue May 19 11:11:36 CEST 2009


-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Hi Michael,

Looks like a bug that is fixed in svn trunk of unbound.

Best regards,
   Wouter

Michael Tokarev wrote:
> For how long unbound caches failed queries?  For now,
> if at the time of query the NSes are unreachable, unbound
> remembers that "reply" and returns "SERVFAIL" for that
> name for quite some time, even if the nameservers are
> now reachable again.  To the extent that I have to
> restart it to clear the condition.
> 
> Note that the QUERY "result" (or lack thereof) is cached,
> not the nameservers.  I.e., if I query another name in the
> same domain right when the NS becomes reachable, unbound
> will process it just fine.  But the original query is still
> replied with SERVFAIL.
> 
> unbound-1.2.1.
> 
> Thanks!
> 
> /mjt
> _______________________________________________
> Unbound-users mailing list
> Unbound-users at unbound.net
> http://unbound.nlnetlabs.nl/mailman/listinfo/unbound-users

-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.9 (GNU/Linux)
Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org

iEYEARECAAYFAkoSd8gACgkQkDLqNwOhpPjmwACfedgDQ0sLjIrE/nu/XS0os3wp
nY8AnR/tukdYIN6APY+cITxgSEFtE7fg
=vlt5
-----END PGP SIGNATURE-----