Why the heck my NS are not working

[Chris Thompson]

On Jul 20 2014, Blason R wrote:

>The domain is isnlab.in and host i am trying to ping is lbtest.isnlab.in

The glue for delegation isnlab,in is out of step with (various) in-zone
contents. The "in" servers give a referral to

;; AUTHORITY SECTION:
isnlab.in.              86400   IN      NS      nslb02.isnlab.in.
isnlab.in.              86400   IN      NS      nslb01.isnlab.in.

;; ADDITIONAL SECTION:
nslb01.isnlab.in.       86400   IN      A       216.69.185.51
nslb02.isnlab.in.       86400   IN      A       208.109.255.51

But 216.69.185.51 and 208.108.255.51 have a version of the zone (SOA serial
2014071908) which does not include lbtest.isnlab.in, although it does contain

nslb01.isnlab.in.       IN      A       61.16.199.3
nslb02.isnlab.in.       IN      A       59.185.105.73

and the latter two IP addresses have a version (SOA serial 2014071909) that
does know about lbtest.isnlab.in,

You are always going to get inconsistent results until you fix the
delegation. 

-- 
Chris Thompson
Email: cet1 at cam.ac.uk