I set up something like that long time ago with bind + isc-dhcp. You configure the domain and enable nsupdate on it with a key. Then configure DHCPd to use tha

I set up something like that long time ago with bind + isc-dhcp. You configure the domain and enable nsupdate on it with a key. Then configure DHCPd to use that key to populate the domain with hosts. Edit: This is roughly how it is configured: https://unix.stackexchange.com/questions/265142/isc-dhcpd-to-register-or-update-bind-dns-with-client-hostname https://unix.stackexchange.com/questions/265142/isc-dhcpd-to... If you use different dns/dhcp tools it might be done differently.