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net: TestLookupCNAME sometimes failing on Plan 9 #21335
Sometimes, TestLookupCNAME is failing on Plan 9.
Indeed, resolving an nonexistent CNAME can result in either the "dns failure" or the "resource does not exist" error. This behavior can be reproduced with ndb/dnsquery:
This is related to (closed) issue #18391.