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c67b52684f
Add randomizens system test which ensures that NS are randomly selected. The test relies of the fact that `getaddresses_allowed()` logic won't allow to query more than 3 NS at the top-level. The `example.` zone has 4 NS and the 3 formers are lame. As a result, if the resolved doesn't randomize the NS selection, it will only quiery the 3 formers, which won't give an answer, and fails. With randomization enabled, there is a chance that the resolver queries the fourth NS, and gets the result.
21 lines
832 B
Text
21 lines
832 B
Text
Copyright (C) Internet Systems Consortium, Inc. ("ISC")
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SPDX-License-Identifier: MPL-2.0
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This Source Code Form is subject to the terms of the Mozilla Public
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License, v. 2.0. If a copy of the MPL was not distributed with this
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file, you can obtain one at https://mozilla.org/MPL/2.0/.
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See the COPYRIGHT file distributed with this work for additional
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information regarding copyright ownership.
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ns1 is root
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ns{2-4} are auth server on example. but lame
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ns5 is an auth server on example. and works
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ns6 is a resolver
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Because `getaddresses_allowed()` logic won't allow to query more than 3 NS at
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the top-level, only ns{2-4} will be tried without randomization, and example.
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couldn't be resolved. However, with randomization, some queries won't start
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picking example. NS from ns2, but ns3, ns4 or ns5. This enable to resolver
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example.
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