fix bug 160914: try next server on empty answer recursion denied referral
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@ -0,0 +1,34 @@
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--- bind-9.3.1/bin/dig/dighost.c.next_server_on_referral 2005-07-07 13:19:29.000000000 -0400
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+++ bind-9.3.1/bin/dig/dighost.c 2005-07-07 14:30:38.000000000 -0400
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@@ -2765,7 +2765,15 @@
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UNLOCK_LOOKUP;
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return;
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}
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- if (msg->rcode == dns_rcode_servfail && !l->servfail_stops) {
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+ if ( (!l->servfail_stops)
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+ &&( (msg->rcode == dns_rcode_servfail)
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+ ||( (msg->rcode == dns_rcode_noerror)
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+ &&(msg->counts[DNS_SECTION_ANSWER] == 0)
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+ &&((msg->flags & (DNS_MESSAGEFLAG_AA | DNS_MESSAGEFLAG_RA)) == 0)
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+ )
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+ )
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+ )
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+ {
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dig_query_t *next = ISC_LIST_NEXT(query, link);
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if (l->current_query == query)
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l->current_query = NULL;
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@@ -2783,9 +2791,11 @@
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*/
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if ((ISC_LIST_HEAD(l->q) != query) ||
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(ISC_LIST_NEXT(query, link) != NULL)) {
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- printf(";; Got SERVFAIL reply from %s, "
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- "trying next server\n",
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- query->servname);
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+ if( l->comments == ISC_TRUE )
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+ printf(";; Got %s reply from %s, "
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+ "trying next server\n",
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+ msg->rcode == dns_rcode_servfail ? "SERVFAIL" : "referral",
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+ query->servname);
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clear_query(query);
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check_next_lookup(l);
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dns_message_destroy(&msg);
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