3abcd7cd8a
This reverts commit 560d8b833e.
This change created a potential race between key refresh queries and
root zone priming queries which could leave the root name servers in
the bad-server cache.
Copyright (C) 2014, 2016 Internet Systems Consortium, Inc. ("ISC")
This Source Code Form is subject to the terms of the Mozilla Public
License, v. 2.0. If a copy of the MPL was not distributed with this
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Tests of runtime checks, e.g., that named prevents duplicate processes
from running.