[*SP4M*] DHCPd only updating the forward zone

Rick Dicaire kritek at gmail.com
Thu Dec 24 23:19:36 UTC 2020


On Thu, Dec 24, 2020 at 6:12 PM Simon Hobson <dhcp1 at thehobsons.co.uk> wrote:

> It's not actually required IF the DNS is set up properly. dhcpd will look
> for the SOA record for the zone, and send updates to the primary server
> specified.
>
> You do need zone declarations if either the DNS isn't setup to allow dhcpd
> to find the primary server or if you use signed updates.
>

I didn't know this. I have explicit declarations in my pool statement:

   zone 17.168.192.in-addr.arpa {
     primary dns1.ldev;
     key gw-ddns;
   }
   zone dhcp.ldev {
     primary dns1.ldev;
     key gw-ddns;
   }

and this seems to work.
Is this due to the use of TSIG keys (are these signed updates)?
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