Intermittent issues resolving "labor.upload.akamai.com"

[Darren Ankney]

Since the dig output shows "SERVFAIL" it could also be this bug:

* When an outgoing request timed out, named would retry up to three
times with the same server instead of trying the next available name
server. This has been fixed. [GL #3637]

that was fixed in 9.18.11
(https://bind9.readthedocs.io/en/v9_18_11/notes.html#bug-fixes)