The test asked one operator's recursive resolver for eight record types
at each of its two addresses, and passed only when all eight were
refused within one attempt; when that operator stopped answering, next
went red. It is now TestQueryServers_RecursiveResolverRefused: through
the existing QueryServers test export it sends one A query to public
resolvers of four operators in turn, inside livednstest.Retry, moving
on when one gives no reply. Each refuses a query not asking for
recursion and answers one that does, so putting the resend asking for
recursion back still fails the test at once.
Model: opus-5-5