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resolved: when a server response with REFUSED, try a different one 

Fixes: #4264
This commit is contained in:
Lennart Poettering 2017-02-08 19:55:16 +01:00
parent 27007efff6
commit eb08640a44
1 changed files with 10 additions and 1 deletions
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11
src/resolve/resolved-dns-transaction.c
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@ -924,7 +924,16 @@ void dns_transaction_process_reply(DnsTransaction *t, DnsPacket *p) {
dns_transaction_retry(t, false /* use the same server */);
return;
} else if (DNS_PACKET_TC(p))
}
if (DNS_PACKET_RCODE(p) == DNS_RCODE_REFUSED) {
/* This server refused our request? If so, try again, use a different server */
log_debug("Server returned REFUSED, switching servers, and retrying.");
dns_transaction_retry(t, true /* pick a new server */);
return;
}
if (DNS_PACKET_TC(p))
dns_server_packet_truncated(t->server, t->current_feature_level);
break;