Commit b4f3fafc authored by Committed by Ondřej SurýBrowse files
Fix assertion failure during startup when the server is under load.
When we're coming back from recursion fetch_callback does not accept DNS_R_NXDOMAIN as an rcode - query_gotanswer calls query_nxdomain in which an assertion fails on qctx->is_zone. Yet, under some circumstances, qname minimization will return an DNS_R_NXDOMAIN - when root zone mirror is not yet loaded. The fix changes the DNS_R_NXDOMAIN answer to DNS_R_SERVFAIL.
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