[dns-operations] a question about the nameservers

[Feng He]

Hi,

If the nameservers in parent is different from the ones in auth-servers, 
what will happen?

For example, with this case you can see the difference.

$ dig tel.im +trace

; <<>> DiG 9.6.1-P2 <<>> tel.im +trace
;; global options: +cmd
.                       412533  IN      NS      d.root-servers.net.
.                       412533  IN      NS      l.root-servers.net.
.                       412533  IN      NS      c.root-servers.net.
.                       412533  IN      NS      i.root-servers.net.
.                       412533  IN      NS      e.root-servers.net.
.                       412533  IN      NS      m.root-servers.net.
.                       412533  IN      NS      a.root-servers.net.
.                       412533  IN      NS      j.root-servers.net.
.                       412533  IN      NS      h.root-servers.net.
.                       412533  IN      NS      g.root-servers.net.
.                       412533  IN      NS      k.root-servers.net.
.                       412533  IN      NS      f.root-servers.net.
.                       412533  IN      NS      b.root-servers.net.
;; Received 512 bytes from 119.147.163.133#53(119.147.163.133) in 0 ms

im.                     172800  IN      NS      hoppy.iom.com.
im.                     172800  IN      NS      pebbles.iom.com.
im.                     172800  IN      NS      ns4.ja.net.
im.                     172800  IN      NS      barney.advsys.co.uk.
;; Received 222 bytes from 198.41.0.4#53(a.root-servers.net) in 240 ms

tel.im.                 259200  IN      NS      ans.amchina.net.
tel.im.                 259200  IN      NS      bns.amchina.net.
tel.im.                 259200  IN      NS      cns.amchina.net.
tel.im.                 259200  IN      NS      dns.amchina.net.
;; Received 107 bytes from 80.168.83.242#53(pebbles.iom.com) in 271 ms

tel.im.                 3600    IN      A       14.1.20.54
tel.im.                 3600    IN      NS      ns1.cloudwebdns.com.
tel.im.                 3600    IN      NS      ns2.cloudwebdns.com.
tel.im.                 3600    IN      NS      ns3.cloudwebdns.com.
tel.im.                 3600    IN      NS      ns4.cloudwebdns.com.
;; Received 191 bytes from 173.254.229.119#53(bns.amchina.net) in 234 ms


Thanks.