In message <394305900.760891271963571419.javamail.r...@sz0093a.westchester.pa.m ail.comcast.net>, Lou Picciano writes: > Bind Users: > > Wonder if anyone has seen this, and can offer an insight?
BIND 9.7.0 does a better job of detecting anonmallies in responses to iterative queries. You were just lucky that the responses were accepted by the previous versions. The answer was non-authoritive (no "aa" in flags) and recursion was not requested (no "rd" in flags). This would not normally happen unless there is something mucking with the query / response. > 22-Apr-2010 12:06:52.083 resolver: debug 10: received packet: > ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 60591 > ;; flags: qr ra ; QUESTION: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 1 > ;; OPT PSEUDOSECTION: > ; EDNS: version: 0, flags: do; udp: 4000 > ;; QUESTION SECTION: > ;ibm.com. IN A > > ;; ANSWER SECTION: > ibm.com. 21578 IN A 129.42.17.103 > ibm.com. 21578 IN A 129.42.18.103 > ibm.com. 21578 IN A 129.42.16.103 IBM's servers respond like this. Note "aa" is set and "ra" is not set. ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 17828 ;; flags: qr aa; QUERY: 1, ANSWER: 3, AUTHORITY: 4, ADDITIONAL: 6 ;; OPT PSEUDOSECTION: ; EDNS: version: 0, flags: do; udp: 4096 ;; QUESTION SECTION: ;ibm.com. IN A ;; ANSWER SECTION: ibm.com. 21600 IN A 129.42.18.103 ibm.com. 21600 IN A 129.42.16.103 ibm.com. 21600 IN A 129.42.17.103 ;; AUTHORITY SECTION: ibm.com. 3600 IN NS ns.austin.ibm.com. ibm.com. 3600 IN NS internet-server.zurich.ibm.com. ibm.com. 3600 IN NS ns.watson.ibm.com. ibm.com. 3600 IN NS ns.almaden.ibm.com. ;; ADDITIONAL SECTION: ns.austin.ibm.com. 86400 IN A 192.35.232.34 ns.watson.ibm.com. 3600 IN A 129.34.20.80 ns.almaden.ibm.com. 86400 IN A 198.4.83.35 internet-server.zurich.ibm.com. 1800 IN A 195.176.20.204 internet-server.zurich.ibm.com. 1800 IN AAAA 2001:620:20:fe01:100::2000 ;; Query time: 358 msec ;; SERVER: 129.34.20.80#53(129.34.20.80) ;; WHEN: Fri Apr 23 16:42:33 2010 ;; MSG SIZE rcvd: 286 Mark -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: ma...@isc.org _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
