DNS check broking sometimes

[Pete Ehlke]

* Ronan Lucio <ronan at melim.com.br> said, on [011217 08:20]:
> 
> Hi All,
> 
> At this moment I´m having such problem in a client:
> 
> Look this:
> 
> $ dig @200.215.111.234 zikeli.com.br
> ; <<>> DiG 8.3 <<>> @200.215.111.234 zikeli.com.br
> ; (1 server found)
> ;; res options: init recurs defnam dnsrch
> ;; res_nsend to server 200.215.111.234: Operation timed out
> 
> But, if I execute a host -a, the domain seems to working fine:
> 
Looks like  your upstream provider is having routing issues:

traceroute to 200.215.111.234 (200.215.111.234), 64 hops max, 40 byte packets

[ snip ]

21  * BrT-A0-1-1-fns-core.telesc.net.br (200.203.180.250)  324.772 ms 340.802 ms
22  BrT-f0-0-0.fns301.telesc.net.br (200.215.1.2)  385.548 ms  363.938 ms  333.629 ms
23  200.180.13.30 (200.180.13.30)  338.353 ms  331.498 ms  334.215 ms
24  BrT-c-s-1-3-iai300.telesc.net.br (200.215.76.50)  356.880 ms 334.862 ms  370.363 ms
25  BrT-s-1-3-iai300.telesc.net.br (200.215.76.49)  331.953 ms  332.322 ms  360.185 ms
26  BrT-c-s-1-3-iai300.telesc.net.br (200.215.76.50)  362.106 ms 360.324 ms  378.625 ms
27  BrT-s-1-3-iai300.telesc.net.br (200.215.76.49)  340.842 ms  328.256 ms  346.667 ms
28  BrT-c-s-1-3-iai300.telesc.net.br (200.215.76.50)  378.552 ms 445.743 ms *
29  BrT-s-1-3-iai300.telesc.net.br (200.215.76.49)  345.921 ms  396.747 ms  344.598 ms

My guess is that you have some other name server listed in resolv.conf,
and this is why your 'host -a' worked.

--Pete