In article <mailman.206.1496135739.702.bind-us...@lists.isc.org>, Harshith Mulky <harshith.mu...@outlook.com> wrote:
> Hello Mark, > > Yes the client is retrying the query over TCP. > > But initially I am getting no Answers > The ANSWER is as below > > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 18094 > ;; flags: qr aa tc rd ad ; QUESTION: 1, ANSWER: 0, AUTHORITY: 0, ADDITIONAL: > 1 > ;; OPT PSEUDOSECTION: > ; EDNS: version: 0, flags: do; udp: 4096 > ;; QUESTION SECTION: > ;pcr21381.dflt.vzb.com. IN NAPTR > > Should the server be sending some responses which are truncated (or) no > Responses in this case? BIND will omit the Additional Section (and maybe also the Authority Section?) if that allows the response to fit. Otherwise I believe it just sends an empty response, and the client is supposed to retry with TCP. The problem with sending a partial Answer Section is that there's no way for the client to know if the omitted answers are important. So it has to retry anyway. -- Barry Margolin Arlington, MA _______________________________________________ Please visit https://lists.isc.org/mailman/listinfo/bind-users to unsubscribe from this list bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
