atac.fr DNS problem

Mon Aug 17 14:36:24 UTC 2009

Hello,

Our AS855 can't seem to contact the DNS servers for atac.fr domains (dns.atac.fr [62.160.25.65] & dns2.atac.fr [195.68.125.36]). From our network, dig dies for both IPs:

------------------------------------------------------------------------------
;; Received 401 bytes from 192.33.4.12#53(c.root-servers.net) in 17 ms

atac.fr.                172800  IN      NS      dns2.atac.fr.
atac.fr.                172800  IN      NS      dns.atac.fr.
;; Received 94 bytes from 194.57.253.1#53(E.NIC.fr) in 316 ms

dig: couldn't get address for 'dns2.atac.fr': not found
------------------------------------------------------------------------------

If I use dig from public web sites it works:

------------------------------------------------------------------------------
;; Received 401 bytes from 192.203.230.10#53(e.root-servers.net) in 94 ms

atac.fr.        172800    IN    NS    dns2.atac.fr.
atac.fr.        172800    IN    NS    dns.atac.fr.
;; Received 94 bytes from 194.57.253.1#53(E.NIC.fr) in 313 ms

atac.fr.        300    IN    A    194.145.56.21
atac.fr.        300    IN    NS    dns.atac.fr.
atac.fr.        300    IN    NS    dns2.atac.fr.
;; Received 110 bytes from 195.68.125.36#53(dns2.atac.fr) in 113 ms
------------------------------------------------------------------------------

A traceroutes die as well:

traceroute 195.68.125.36
....
 9  ae-2-79.edge1.NewYork1.Level3.net (4.68.16.78) [AS  3356]  25.278 ms ae-1-69.edge1.NewYork1.Level3.net (4.68.16.14) [AS  3356]  25.284 ms ae-4-99.edge1.NewYork1.Level3.net (4.68.16.206) [AS  3356]  27.476 ms
10  COLT-TELECO.edge1.NewYork1.Level3.net (4.78.132.22) [AS  3356]  25.871 ms  26.014 ms  25.589 ms
11  * * *
12  90.168-14-84.ripe.coltfrance.com (84.14.168.90) [AS  8220]  114.992 ms  114.912 ms  115.243 ms
13  * * *

traceroute 62.160.25.65 
...
 9  ae-2-79.edge2.NewYork1.Level3.net (4.68.16.80) [AS  3356]  25.573 ms  25.429 ms ae-3-89.edge2.NewYork1.Level3.net (4.68.16.144) [AS  3356]  25.591 ms
10  francetelecom-level3-te.NewYork1.Level3.net (4.68.111.86) [AS  3356]  39.905 ms francetelecom-level3-te.NewYork1.Level3.net (4.68.111.82) [AS  3356]  33.916 ms  33.762 ms
11  * * *

It appears as though packets aren't making their way back. Is there anyone from francetelecom or AS8220 that could assist?

Thanks,
Serge

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