[Pdns-users] Testing master functionality on ldap backend

[Nikolaos Milas]

Hello,

I am testing the new ldap backend 
(http://repo.or.cz/w/pdns-ldap-backend.git) under pdns v3.2 on CentOS 
6.4 x86_64

I have a question: It seems the master is sending duplicate 
notifications to the slave, both at the IPv4 and at the IPv6 address.

Is this expected behavior? Please explain.

Test details follow.

The test master server is vmres.noa.gr with:

    ...
    local-address=127.0.0.1 194.177.195.158
    local-ipv6=::1 2001:648:2011:14::158
    ...

The slave runs at:

    vdev.noa.gr
    195.251.204.232
    2001:648:2011:10::232

Here is the master zone, as queried:

# dig ANY 204.251.195.in-addr.arpa @194.177.195.158

; <<>> DiG 9.8.2rc1-RedHat-9.8.2-0.17.rc1.el6.3 <<>> ANY 
204.251.195.in-addr.arpa @194.177.195.158
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 39168
;; flags: qr aa rd; QUERY: 1, ANSWER: 3, AUTHORITY: 0, ADDITIONAL: 2
;; WARNING: recursion requested but not available

;; QUESTION SECTION:
;204.251.195.in-addr.arpa.      IN      ANY

;; ANSWER SECTION:
204.251.195.in-addr.arpa. 86400 IN      NS      vdev.noa.gr.
204.251.195.in-addr.arpa. 86400 IN      NS      vmres.noa.gr.
204.251.195.in-addr.arpa. 86400 IN      SOA     vmres.noa.gr. 
sysadmin.noa.gr. 2013032002 86400 180 1209600 3600

;; ADDITIONAL SECTION:
vdev.noa.gr.            86400   IN      A       195.251.204.232
vdev.noa.gr.            86400   IN      AAAA    2001:648:2011:10::232

;; Query time: 2 msec
;; SERVER: 194.177.195.158#53(194.177.195.158)
;; WHEN: Thu Mar 21 12:21:55 2013
;; MSG SIZE  rcvd: 176

Some logs after zone change, for reference:

Mar 20 20:21:28 vmres pdns[9128]: 1 domain for which we are master needs 
notifications
Mar 20 20:21:28 vmres pdns[9128]: Queued notification of domain 
'204.251.195.in-addr.arpa' to 195.251.204.232
Mar 20 20:21:28 vmres pdns[9128]: Queued notification of domain 
'204.251.195.in-addr.arpa' to 2001:648:2011:10::232
...
Mar 20 20:21:28 vmres pdns[9128]: AXFR of domain 
'204.251.195.in-addr.arpa' initiated by 195.251.204.232
Mar 20 20:21:28 vmres pdns[9128]: AXFR of domain 
'204.251.195.in-addr.arpa' allowed: client IP 195.251.204.232 is in 
allow-axfr-ips
...
Mar 20 20:21:28 vmres pdns[9128]: AXFR of domain 
'204.251.195.in-addr.arpa' to 195.251.204.232 finished
...
Mar 20 20:21:29 vmres pdns[9128]: Removed from notification list: 
'204.251.195.in-addr.arpa' to 195.251.204.232:53 (was acknowledged)

Thanks and Regards,
Nick