Re: Same Transaction ID queries
Samer Khattab skhat...@gmail.com wrote: What is BIND internal logic when such a series of queries are received, and why it would not answer to all requests. Each query in progress from a given client must have a different ID, so queries with the same ID are logically the same query which only needs one reply. The usual situations in which this occurs are timeouts and retries. Tony. -- f.anthony.n.finch d...@dotat.at http://dotat.at/ East Sole: Northwesterly 4 or 5, becoming variable 4. Moderate or rough. Occasional rain. Moderate occasionally poor. ___ 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
Same Transaction ID queries
Hi all, We have an observation for some queries where BIND caching server receives multiple queries (three or four, A or ) for a domain name, with the same transaction ID in the DNS header in all query packets, and one response packet is sent back from the server only for these queries. The client IP,source port and Server IP is the same in these queries. Is this the right BIND behavior in this case or it is an issue. Regards, Naser Al Hattab. ___ 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
Same Transaction ID queries
Hi all, We have an observation for some queries where BIND caching server receives multiple queries (three or four, A or ) for a domain name, with the same transaction ID in the DNS header in all query packets, and one response packet is sent back from the server only for these queries. The client IP,source port and Server IP is the same in these queries. Is this the right BIND behavior in this case or it is an issue. Regards, Samer Khattab ___ 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
Re: Same Transaction ID queries
In message CAH14rHi==V=BG4AZUGTuO0m7ruQC+WiK3hRko=oky1lepdf...@mail.gmail.com , Samer Khattab writes: Hi all, We have an observation for some queries where BIND caching server receives multiple queries (three or four, A or ) for a domain name, with the same transaction ID in the DNS header in all query packets, and one response packet is sent back from the server only for these queries. The client IP,source port and Server IP is the same in these queries. Is this the right BIND behavior in this case or it is an issue. It is expected behavior. Regards, Samer Khattab -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org ___ 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
Re: Same Transaction ID queries
What is BIND internal logic when such a series of queries are received, and why it would not answer to all requests. Regards, Samer Khattab On Sun, Feb 5, 2012 at 9:42 AM, Mark Andrews ma...@isc.org wrote: In message CAH14rHi==V=BG4AZUGTuO0m7ruQC+WiK3hRko= oky1lepdf...@mail.gmail.com , Samer Khattab writes: Hi all, We have an observation for some queries where BIND caching server receives multiple queries (three or four, A or ) for a domain name, with the same transaction ID in the DNS header in all query packets, and one response packet is sent back from the server only for these queries. The client IP,source port and Server IP is the same in these queries. Is this the right BIND behavior in this case or it is an issue. It is expected behavior. Regards, Samer Khattab -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org ___ 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
