[dns-operations] Missing .us and GTLD records??

Mark Andrews marka at isc.org
Thu May 20 01:53:43 UTC 2010

In message <Pine.LNX.4.64.1005192059090.21539 at server1.hal22.net>, Luis Uribarri
> So you are saying that having 2 out of 9 failures is within specification 
> becausee the resolvers will compensate.

Except they are not failure.  IPv4 only servers won't send to them
so there are no failures.  If the kernel supports IPv4 and IPv6 and
you don't have IPv6 turned on the sendmsg/sendto will generate a
immediate error and you just move onto the next server (old versions
of Solaris are broken here) as there is no route.  If you are running
dual stack internally and don't have external connectivity then you
will get some timeouts if the nameserver can't see the ICMP unreachables
but even then it's millseconds rather than seconds.

More information about the dns-operations mailing list