Problems with NS*.worldnic.com

Tue Apr 26 15:05:45 UTC 2005

In message <Pine.GSO.4.58.0504261351530.6246 at sharpie.argfrp.us.uu.net>, "Christ
opher L. Morrow" writes:
>
>
>On Tue, 26 Apr 2005, Randy Bush wrote:
>
>> lots of folk sent email to me and not the list.  most report
>> worldnic responding with tcp 53 and not udp.  would love to
>> hear confirmation on list.  can think of a number of causes,
>> one possible, but just a stab in the dark, would be an
>> intentional hack as a defense to a spoofed-ip attack.
>>
>> what are some names known to be hosted on worldnic?
>
>we had problems reported with:
>
>www.calairmail.com
>www.holidaycardwebsite.com
>
>I did some poking around lastnight with dig and some local unix hosts that
>I hadn't tried this before on and got no change to tcp :( (so no truncate
>and returned results via UDP) though today I see:
>
>morrowc at iad1-srv02:~$ dig www.holidaycardwebsite.com. @ns7.worldnic.com
>;; Truncated, retrying in TCP mode.
>
>and failures (which is PROBABLY my silly iptables config...)
>
>morrowc at iad1-srv02:~$ dig www.holidaycardwebsite.com. @ns8.worldnic.com
>
>; <<>> DiG 9.2.2rc1 <<>> www.holidaycardwebsite.com. @ns8.worldnic.com
>;; global options:  printcmd

>
>interesting that both servers aren't doing the same thing?
>
Both work for me, from two different places, one of which has v6 
connectivity and one of which doesn't.

		--Prof. Steven M. Bellovin, http://www.cs.columbia.edu/~smb