Hello, after upgrading to 9.8.0p2 I have notices problems with recursive queries. The server sometimes does not return answer for e.g. www.yahoo.com.
Repeated lookups for www.yahoo.com sometimes do, sometimes do not return the answer, only the first CNAME, but the nameserver did know where the CNAMEs point to and answered when I asked. A few times I was unable to get the full answer for quite long time. (and users were complaining). I don't have this problem with 9.7.3... I found the 9.8.0 CNAMEs chain problem reported in April without further informations. I think this situation can cause real troubles, because stub resolvers are not expected to lookup the CNAMEs themselves, are they? Example, a few lookups in the short time: uhlar@fantomas% dig www.yahoo.com @195.168.1.156 [snip] ;; ANSWER SECTION: www.yahoo.com. 65 IN CNAME fp.wg1.b.yahoo.com. fp.wg1.b.yahoo.com. 3035 IN CNAME eu-fp.wa1.b.yahoo.com. eu-fp.wa1.b.yahoo.com. 60 IN A 87.248.122.122 eu-fp.wa1.b.yahoo.com. 60 IN A 87.248.112.181 ;; AUTHORITY SECTION: wa1.b.yahoo.com. 600605 IN NS yf2.yahoo.com. wa1.b.yahoo.com. 600605 IN NS yf1.yahoo.com. ;; ADDITIONAL SECTION: yf1.yahoo.com. 1235 IN A 68.142.254.15 yf2.yahoo.com. 1235 IN A 68.180.130.15 ;; Query time: 31 msec ;; SERVER: 195.168.1.156#53(195.168.1.156) ;; WHEN: Mon May 30 17:46:30 2011 ;; MSG SIZE rcvd: 178 uhlar@fantomas% dig www.yahoo.com @195.168.1.156 [snip] ;; ANSWER SECTION: www.yahoo.com. 64 IN CNAME fp.wg1.b.yahoo.com. ;; Query time: 1 msec ;; SERVER: 195.168.1.156#53(195.168.1.156) ;; WHEN: Mon May 30 17:46:31 2011 ;; MSG SIZE rcvd: 54 uhlar@fantomas% dig www.yahoo.com @195.168.1.156 [snip] ;; ANSWER SECTION: www.yahoo.com. 29 IN CNAME fp.wg1.b.yahoo.com. fp.wg1.b.yahoo.com. 2999 IN CNAME eu-fp.wa1.b.yahoo.com. eu-fp.wa1.b.yahoo.com. 24 IN A 87.248.112.181 eu-fp.wa1.b.yahoo.com. 24 IN A 87.248.122.122 ;; AUTHORITY SECTION: wa1.b.yahoo.com. 600569 IN NS yf2.yahoo.com. wa1.b.yahoo.com. 600569 IN NS yf1.yahoo.com. ;; ADDITIONAL SECTION: yf1.yahoo.com. 1199 IN A 68.142.254.15 yf2.yahoo.com. 1199 IN A 68.180.130.15 -- Matus UHLAR - fantomas, uh...@fantomas.sk ; http://www.fantomas.sk/ Warning: I wish NOT to receive e-mail advertising to this address. Varovanie: na tuto adresu chcem NEDOSTAVAT akukolvek reklamnu postu. REALITY.SYS corrupted. Press any key to reboot Universe. _______________________________________________ bind-users mailing list bind-users@lists.isc.org https://lists.isc.org/mailman/listinfo/bind-users
