multiple answers from the same server

Haim [Howard] Roman roman at jct.ac.il
Thu Dec 20 11:47:07 UTC 2007


The command "host -v www.drama.org" returns *3* answers from the *same*
DNS server.  Here is the output (I put dashed lines between each answer):

    -----------------------------------------------------------------------------------------

    Trying "www.drama.org"
    ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 48074
    ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 0

    ;; QUESTION SECTION:
    ;www.drama.org.                 IN      A

    ;; ANSWER SECTION:
    www.drama.org.          1802    IN      A       208.73.212.12

    ;; AUTHORITY SECTION:
    drama.org.              80368   IN      NS      ns1.dsredirection.com.
    drama.org.              80368   IN      NS      ns2.dsredirection.com.

    Received 100 bytes from 147.161.1.4#53 in 0 ms

    - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    Trying "www.drama.org"

    Host www.drama.org not found: 2(SERVFAIL)
    Received 31 bytes from 147.161.1.4#53 in 483 ms

    - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    Trying "www.drama.org"
    Host www.drama.org not found: 2(SERVFAIL)
    Received 31 bytes from 147.161.1.4#53 in 471 ms
    ------------------------------------------------------------------------------------------


This happens only when I run on one particular station (Debian 4.0, AMD
64-bit).  On other computers (Linux and Solaris), "host" (or "nslookup")
return only *1* answer.


In addition, "dig" returns only the 1st answer.


Any ideas what is happening?  Thanks.

-- 
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Haim (Howard) Roman
Computer Center, Jerusalem College of Technology
roman at jct.ac.il
Phone: 052-8-592-599 (6022 from within Machon Lev)




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