DDNS updates for secondary DNS server

glenn.satchell at uniq.com.au glenn.satchell at uniq.com.au
Thu Apr 29 07:26:59 UTC 2021

Can you run tcpdump or wireshark on the dhcp server looking for packets 
between the dhcp server and the dns servers?


On 2021-04-29 16:24, kraishak wrote:
> Hi Gelnn,
> - Check your secondary is configured to accept updates from the dhcp
> server.
> -----> yes it is working fine when I flip the secondary as primary and
> primary as secondary and respective changes on the dhcpd.conf also, By 
> this
> I guess there is no issue with secondary server receiving updates from 
> server
> - Turn on logging of updates on the secondary to see if anything is
> sent.
> - Run a packet trace on the secondary to look at network traffic to see
> if anything is sent to it.
> -------> Here I am using the Windows servers as DNS, but when I 
> searched in
> forums some of them suggest saying to have an allow-update-forwarding 
> option
> on slave zone which can update primary,
> I am checking if we have any equivalent on the windows server
> Thanks
> Kraishak
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