Bug#650965: pdns-recursor: gives inconsistent results on subsequent queries
Package: pdns-recursor Version: 3.6.1-1~bpo70+1 Followup-For: Bug #650965 Unfortunately, inconsistency bug still appears in 3.6.1-1~bpo70+1 from wheezy-backports. This time not fatal (as domain data didn't change), but subsequent calls to pdns-recursor return different TTL data (indicating it keeps two different cached versions for same data): for example (all request are to this one pdns-recursor instance via /etc/resolv.conf). You'll notice in attached report TTL being 77xxx, then 28xxx, then again 77xxx, and again 28xxx and repeating. -- System Information: Debian Release: 7.7 APT prefers stable APT policy: (500, 'stable') Architecture: i386 (i686) Kernel: Linux 3.2.0-4-686-pae (SMP w/2 CPU cores) Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968) Shell: /bin/sh linked to /bin/bash Versions of packages pdns-recursor depends on: ii adduser 3.113+nmu3 ii libc62.13-38+deb7u6 ii libgcc1 1:4.7.2-5 ii liblua5.2-0 5.2.1-3+deb7u1 ii libstdc++6 4.7.2-5 ii lsb-base 4.1+Debian8+deb7u1 Versions of packages pdns-recursor recommends: pn pdns-doc pdns-recursor suggests no packages. -- Configuration Files: /etc/powerdns/recursor.conf changed: allow-from=127.0.0.0/8, 10.0.0.0/8, 192.168.0.0/16, 172.16.0.0/12, ::1/128, fe80::/10, 83.139.110.0/26, 2a00:dd8:0:1::1e/126, 2a00:dd8:8000:100::/56 chroot=/var/empty dont-query=fe80::/10 forward-zones-file=/etc/powerdns/forward-zones.cfg local-address=192.168.200.254 local-port=53 query-local-address=83.139.110.1 query-local-address6=2a00:dd8:8000:110::1 quiet=yes setgid=pdns setuid=pdns -- no debconf information % dig ns inside.hr ; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> ns inside.hr ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 62962 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;inside.hr. IN NS ;; ANSWER SECTION: inside.hr. 77083 IN NS ns2.incloud.hr. inside.hr. 77083 IN NS ns1.incloud.hr. ;; Query time: 0 msec ;; SERVER: 192.168.200.254#53(192.168.200.254) ;; WHEN: Wed Nov 26 15:15:18 2014 ;; MSG SIZE rcvd: 71 % dig ns inside.hr ; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> ns inside.hr ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 5264 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;inside.hr. IN NS ;; ANSWER SECTION: inside.hr. 77079 IN NS ns2.incloud.hr. inside.hr. 77079 IN NS ns1.incloud.hr. ;; Query time: 0 msec ;; SERVER: 192.168.200.254#53(192.168.200.254) ;; WHEN: Wed Nov 26 15:15:21 2014 ;; MSG SIZE rcvd: 71 % dig ns inside.hr ; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> ns inside.hr ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 55603 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;inside.hr. IN NS ;; ANSWER SECTION: inside.hr. 28036 IN NS ns1.incloud.hr. inside.hr. 28036 IN NS ns2.incloud.hr. ;; Query time: 0 msec ;; SERVER: 192.168.200.254#53(192.168.200.254) ;; WHEN: Wed Nov 26 15:15:22 2014 ;; MSG SIZE rcvd: 71 % dig ns inside.hr ; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> ns inside.hr ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39498 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;inside.hr. IN NS ;; ANSWER SECTION: inside.hr. 77078 IN NS ns2.incloud.hr. inside.hr. 77078 IN NS ns1.incloud.hr. ;; Query time: 0 msec ;; SERVER: 192.168.200.254#53(192.168.200.254) ;; WHEN: Wed Nov 26 15:15:23 2014 ;; MSG SIZE rcvd: 71 % dig ns inside.hr ; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> ns inside.hr ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 25100 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;inside.hr. IN NS ;; ANSWER SECTION: inside.hr. 77075 IN NS ns2.incloud.hr. inside.hr. 77075 IN NS ns1.incloud.hr. ;; Query time: 0 msec ;; SERVER: 192.168.200.254#53(192.168.200.254) ;; WHEN: Wed Nov 26 15:15:26 2014 ;; MSG SIZE rcvd: 71 % dig ns inside.hr ; <<>> DiG 9.8.4-rpz2+rl005.12-P1 <<>> ns inside.hr ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 64829 ;; flags: qr rd ra; QUERY: 1, ANSWER: 2, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;inside.hr. IN NS ;; ANSWER SECTION: inside.hr. 77074 IN NS ns2.incloud.hr. inside.hr. 77074 IN NS ns1.incloud.hr. ;; Query time: 0 msec ;; SERVER: 192.16
Bug#650965: pdns-recursor: gives inconsistent results on subsequent queries
Package: pdns-recursor Version: 3.2-4 Severity: normal If I query my pdns-recursor (at 192.168.1.100) several times in a row, it gives different results, right answer only about 1 in 5 times, even though the result should be cached for 555 seconds. newaxe# dig imap.tomsoft.hr @192.168.1.100 ; <<>> DiG 9.6-ESV-R4 <<>> imap.tomsoft.hr @192.168.1.100 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 48649 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;imap.tomsoft.hr. IN A ;; AUTHORITY SECTION: tomsoft.hr. 2560IN SOA ns1.tomsoft.hr. hostmaster.tomsoft.hr. 1322478975 16384 2048 1048576 2560 ;; Query time: 0 msec ;; SERVER: 192.168.1.100#53(192.168.1.100) ;; WHEN: Wed Nov 30 18:19:47 2011 ;; MSG SIZE rcvd: 84 newaxe# dig imap.tomsoft.hr @192.168.1.100 ; <<>> DiG 9.6-ESV-R4 <<>> imap.tomsoft.hr @192.168.1.100 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 46566 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;imap.tomsoft.hr. IN A ;; ANSWER SECTION: imap.tomsoft.hr.555 IN A 195.190.136.132 ;; Query time: 0 msec ;; SERVER: 192.168.1.100#53(192.168.1.100) ;; WHEN: Wed Nov 30 18:19:47 2011 ;; MSG SIZE rcvd: 49 newaxe# dig imap.tomsoft.hr @192.168.1.100 ; <<>> DiG 9.6-ESV-R4 <<>> imap.tomsoft.hr @192.168.1.100 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 64851 ;; flags: qr rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0 ;; QUESTION SECTION: ;imap.tomsoft.hr. IN A ;; ANSWER SECTION: imap.tomsoft.hr.555 IN A 195.190.136.132 ;; Query time: 0 msec ;; SERVER: 192.168.1.100#53(192.168.1.100) ;; WHEN: Wed Nov 30 18:19:47 2011 ;; MSG SIZE rcvd: 49 newaxe# dig imap.tomsoft.hr @192.168.1.100 ; <<>> DiG 9.6-ESV-R4 <<>> imap.tomsoft.hr @192.168.1.100 ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NXDOMAIN, id: 7863 ;; flags: qr rd ra; QUERY: 1, ANSWER: 0, AUTHORITY: 1, ADDITIONAL: 0 ;; QUESTION SECTION: ;imap.tomsoft.hr. IN A ;; AUTHORITY SECTION: tomsoft.hr. 2560IN SOA ns1.tomsoft.hr. hostmaster.tomsoft.hr. 1322478975 16384 2048 1048576 2560 ;; Query time: 0 msec ;; SERVER: 192.168.1.100#53(192.168.1.100) ;; WHEN: Wed Nov 30 18:20:00 2011 ;; MSG SIZE rcvd: 84 Querying authorative DNS servers (ns1.tomsoft.hr and ns2.tomsoft.hr always returns correct result). newaxe% dig imap.tomsoft.hr @ns1.tomsoft.hr. ; <<>> DiG 9.6-ESV-R4 <<>> imap.tomsoft.hr @ns1.tomsoft.hr. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 27365 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 ;; WARNING: recursion requested but not available ;; QUESTION SECTION: ;imap.tomsoft.hr. IN A ;; ANSWER SECTION: imap.tomsoft.hr.555 IN A 195.190.136.132 ;; AUTHORITY SECTION: tomsoft.hr. 555 IN NS ns1.tomsoft.hr. tomsoft.hr. 555 IN NS ns2.tomsoft.hr. ;; ADDITIONAL SECTION: ns1.tomsoft.hr. 9000IN A 195.190.136.132 ns2.tomsoft.hr. 9000IN A 195.190.136.21 ;; Query time: 0 msec ;; SERVER: 195.190.136.132#53(195.190.136.132) ;; WHEN: Wed Nov 30 18:28:44 2011 ;; MSG SIZE rcvd: 117 newaxe% dig imap.tomsoft.hr @ns2.tomsoft.hr. ; <<>> DiG 9.6-ESV-R4 <<>> imap.tomsoft.hr @ns2.tomsoft.hr. ;; global options: +cmd ;; Got answer: ;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 14173 ;; flags: qr aa rd; QUERY: 1, ANSWER: 1, AUTHORITY: 2, ADDITIONAL: 2 ;; WARNING: recursion requested but not available ;; QUESTION SECTION: ;imap.tomsoft.hr. IN A ;; ANSWER SECTION: imap.tomsoft.hr.555 IN A 195.190.136.132 ;; AUTHORITY SECTION: tomsoft.hr. 555 IN NS ns1.tomsoft.hr. tomsoft.hr. 555 IN NS ns2.tomsoft.hr. ;; ADDITIONAL SECTION: ns1.tomsoft.hr. 9000IN A 195.190.136.132 ns2.tomsoft.hr. 9000IN A 195.190.136.21 ;; Query time: 0 msec ;; SERVER: 195.190.136.21#53(195.190.136.21) ;; WHEN: Wed Nov 30 18:28:47 2011 ;; MSG SIZE rcvd: 117 The bug repeats sporadically, and restarting pdns-recursor cures it. -- System Information: Debian Release: 6.0.3 APT prefers stable-updates APT policy: (500, 'stable-updates'), (500, 'stable') Architecture: amd64 (x86_64) Kernel: Linux 2.6.32-5-amd64 (SMP w/2 CPU cores) Locale: LANG=C, LC_CTYPE=C (charmap=ANSI_X3.4-1968) Shell: /bin/sh linked to /bin/dash Versions of packages pdns-recursor depends on: ii adduser 3.112+nmu2 add and remove users and groups ii libc6 2.11.2-10Embedded GNU C Library: Shared li
