What is the update mechanism for DNS Internal?

[Greg Dickie]

Hi,

 Just started playing with DNS internal after having some weirdness with
BIND9. One of the issues remains though. When I make a change to the DNS
what is the update mechanism to propagate to the other servers. I
assumed the AD partition replication would deal with it but I had the
same problem with BIND9 that when a change is made the other servers do
not seem to see it.

For example, in the output below I query 2 AD servers (1 windows, one
samba4) and they have different serial numbers for the zones. I assume
there is a mechanism to detect that and refresh the zone but I looked
quickly at the code and don't see it. Can someone describe how it's
supposed to work so I can debug?

root at ads2 samba]# dig @192.168.169.11 example.local soa

; <<>> DiG 9.7.3-P3-RedHat-9.7.3-8.P3.el6_2.2 <<>> @192.168.169.11
tribalnova.local soa
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 12715
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 1

;; QUESTION SECTION:
;example.local.		IN	SOA

;; ANSWER SECTION:
example.local.	3600	IN	SOA	orange2.example.local.
hostmaster.example.local. 449710 900 600 86400 3600

;; ADDITIONAL SECTION:
orange2.example.local. 3600	IN	A	192.168.169.11

;; Query time: 0 msec
;; SERVER: 192.168.169.11#53(192.168.169.11)
;; WHEN: Fri Apr 13 08:44:36 2012
;; MSG SIZE  rcvd: 104

[root at ads2 samba]# dig @192.168.169.48 example.local soa

; <<>> DiG 9.7.3-P3-RedHat-9.7.3-8.P3.el6_2.2 <<>> @192.168.169.48
example.local soa
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 64670
;; flags: qr aa rd ra; QUERY: 1, ANSWER: 1, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;example.local.		IN	SOA

;; ANSWER SECTION:
example.local.	3600	IN	SOA	orange2.example.local.
hostmaster.example.local. 449706 900 600 86400 3600

;; Query time: 3 msec
;; SERVER: 192.168.169.48#53(192.168.169.48)
;; WHEN: Fri Apr 13 08:44:50 2012
;; MSG SIZE  rcvd: 88


Thanks as always,
Greg


-- 
Greg Dickie
just a guy
514-983-5400