F5 is upgrading its customer support chat feature on My.F5.com. Chat support will be unavailable from 6am-10am PST on 1/20/26. Refer to K000159584 for details.

Forum Discussion

Ignacio_Sanche3's avatar
Ignacio_Sanche3
Icon for Nimbostratus rankNimbostratus
Feb 26, 2013

DNS Express and glue Records

Hi,     When I query to my BIND Server with a NS Record, the result is the following:       dig @192.168.0.78 NS prueba.com     ; <<>> DiG 9.8.3-P2 <<>> @192.168.0.78 NS ...
config
design
Romani_2788's avatar
Romani_2788
Historic F5 Account
May 12, 2013
The difference between the bind environment and the DNS X implementation is that bind is authoritative for the "prueba.com" zone and therefore for the name servers " ns[12].prueba.com.".

 

In the DNS X implementation however, you have configured the zone "prueba.com." but have pointed the name servers to the "test.com." zone which prueba.com is not authoritative for.

 

Since DNS X is designed for speed and DNS security, it will only respond with the name server record (NS) for the zone prueba.com, and will not do a recursive look up for the corresponding A (glue) records even if it is authoritative for the test.com zone. This will work if you query bind.

 

From the GTM request flow this will be the way DNS X will respond by design.

 

 

thanks.