isc dhcp was End-of-Life on October 5, 2022，可以考慮改用 isc 的新 dhcp project - kea
https://gitlab.isc.org/isc-projects/kea
https://ubuntu.com/server/docs/how-to-install-and-configure-isc-kea
https://documentation.ubuntu.com/server/how-to/networking/install-isc-kea/