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DNS woes [was Re: dchanges]



Hello Bruce,

here is what Uni-Mainz.DE is getting:

  # host -v master.debian.org
  Query about master.debian.org for record types A
  Trying master.debian.org ...
  Query done, 1 answer, status: no error
  The following answer is not authoritative:
  master.debian.org       169682  IN      A       192.6.120.248
  Authoritative nameservers:
  debian.org              169682  IN      NS      master.debian.org
  debian.org              169682  IN      NS      CHIARK.CHU.CAM.AC.UK
  debian.org              169682  IN      NS      NS1.WIRELESS.COM
  debian.org              169682  IN      NS      HPCSOS.COL.HP.COM
  Additional information:
  master.debian.org       169682  IN      A       192.6.120.248
  CHIARK.CHU.CAM.AC.UK    802     IN      A       131.111.131.114
  NS1.WIRELESS.COM        169682  IN      A       206.13.40.10
  HPCSOS.COL.HP.COM       169682  IN      A       15.255.240.16

Then i probed the authoritative nameservers:

  # host master.debian.org 192.6.120.248
  Nameserver MASTER.DEBIAN.ORG not responding
  master.debian.org A record not found at MASTER.DEBIAN.ORG, try again
  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ 
  ( That's the source of the troubles !!! )

  # host master.debian.org 131.111.131.114
  master.debian.org       A       206.139.73.161

  # host master.debian.org 206.13.40.10   
  master.debian.org       A       206.139.73.161

  # host master.debian.org 15.255.240.16
  master.debian.org       A       206.139.73.161

So the problem seems to be that the _OLD_ master is listed as first
authority and does not provide an A record for the _NEW_ master.

>From what i understand DNS server will not discard information because
of a DNS error on the other side(call it fail-safe if you like) and
they will not ask the other sources since they can reach what they believe
is master.debian.org.

So the solution seems to be to restart DNS on the OLD master and serve
an A record for the new master...

Dominik

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