Network for support EDNS

[ปลาวาฬทราย RMUTT CPE IX]

From the DNS flag day, how the network can prove that the issue is not caused from the network?

Here are some results from the https://dnsflagday.net test tool:

domain.com. @x:ea00:c010:188:103:x:188:99 (DNS3.DOMAIN.COM.): dns=ok edns=ok edns1=ok edns@512=ok ednsopt=ok edns1opt=ok do=ok ednsflags=ok docookie edns512tcp=timeout optlist=ok 

domain.com. @x:ea00:c010:188:103:x:188:88 (DNS.DOMAIN.COM dns=timeout edns=timeout edns1=timeout edns@512=timeout ednsopt=timeout edns1opt=timeoutdo=timeout ednsflags=timeout docookie=timeout edns512tcp=ok optlist=timeout 

Thank you very much.

[joyston07]

Do we have the parameter on Cisco ASA to get this corrected or right? edns512tcp=timeout.

[ปลาวาฬทราย RMUTT CPE IX]

I have no ASA.

Thank you very much.