Copyright (C) 2014 Internet Systems Consortium, Inc. ("ISC")
See COPYRIGHT in the source root or http://isc.org/copyright.html for terms.
The test setup for the SERVFAIL ncache tests has a secure root.
ns1 is the root server.
ns2 is an authoritative server for the various test domains.
ns5 is a caching-only server, configured with the an incorrect trusted
key for the root. It is used for testing failure cases.