https://rol-factory-prod.ole.redhat.com/rol/app/courses/rh124-10.0/pages/ch18s06

DNS resolution returns SERVFAIL instead of NXDOMAIN in Step 4.3

Description:
In section 4.3, the course content shows the expected output of the host class command as:

Host class not found: 3(NXDOMAIN)

However, in the actual lab environment, the same command returns:

;; communications error to 172.25.250.220#53: timed out
Host class not found: 2(SERVFAIL)

This indicates a communication failure with the DNS server rather than a missing DNS record, which is inconsistent with the expected content behavior.
The DNS server at 172.25.250.220 appears to be unreachable in the lab, resulting in a SERVFAIL.

Please review