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Merge branch '2758-nsupdate-refused-v9_16' into 'v9_16'

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nsupdate: try next server on REFUSED

See merge request isc-projects/bind9!5227
This commit is contained in:
Ondřej Surý
2021-06-23 19:50:18 +00:00
parent a3983a796e e26db7cb9d
commit a55bdea67a
2 changed files with 14 additions and 0 deletions
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3
CHANGES
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@@ -3,6 +3,9 @@
``named`` now sets the DON'T FRAGMENT flag on outgoing
UDP packets. [GL #2183]
5665. [bug] 'nsupdate' did not retry with another server if
it received a REFUSED response. [GL #2758]
5664. [func] Handle a UDP sending error on UDP messages larger
than the path MTU; in such a case an empty response is
sent back with the TC (TrunCated) bit set. Re-enable

11
bin/nsupdate/nsupdate.c
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@@ -2661,6 +2661,17 @@ recvsoa(isc_task_t *task, isc_event_t *event) {
return;
}
check_result(result, "dns_request_getresponse");
if (rcvmsg->rcode == dns_rcode_refused) {
next_server("recvsoa", addr, DNS_R_REFUSED);
dns_message_detach(&rcvmsg);
dns_request_destroy(&request);
dns_message_renderreset(soaquery);
dns_message_settsigkey(soaquery, NULL);
sendrequest(&servers[ns_inuse], soaquery, &request);
return;
}
section = DNS_SECTION_ANSWER;
POST(section);
if (debugging) {