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TechnitiumSoftware / DnsServer

Technitium DNS Server
https://technitium.com/dns/
GNU General Public License v3.0
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FEAT: DHCP Register MAC A Record #1061

Open djarbz opened 1 week ago

djarbz commented 1 week ago

I would like to request a feature.

My idea is that when DHCP hands out an address, in addition to the normal A Record for the hostname it will also register the MAC as an A Record. Optionally with the Manufacturer prefix.

This would be enabled per scope.

My use case is for devices that may change VLANs but might need to be accessed via a common FQDN. This way I could create a CNAME that points to the MAC A Record and it wouldn't matter what VLAN the "server" is on.

ShreyasZare commented 1 week ago

Thanks for the request. Wont the MAC based A record entry be in the same zone as that of the current one, or do you want to have to configure another zone for it? Does using the same domain name for both the scopes work for you scenario?

There is a plan to have DHCP Scope restructured to allow customizing options based on client's MAC or Vendor Identifier so I think if such a design is available later, this config can be done with it without need to have MAC based DNS entry.

djarbz commented 1 week ago

Here I go thinking faster than I can type lol Yes, I was thinking of specifying a "global" zone to dump the A Records into such as mac.lan.

I would be curious to see what these changes might entail, is there an issue where you are discussing these changes that I can review?

Another thought is to have a non-compliant record type such as MNAME where instead of linking a hostname to a CNAME we could just put the MAC in there and internally it would query the DHCP leases.

ShreyasZare commented 1 week ago

Thanks for the response. Will think on this for a while and see what would work better and be easier to configure.