How to block network access by MAC address in Dnsmasq DNS&DHCP

[Eduardo Dias]

Hello everyone.

I updated my home's Opnsense to version 25.7, and I'm no longer using ISC DHCPv4. I'm using Dnsmasq DNS & DHCP, but I can't find the option to release an IP address by MAC address. I've searched the documentation and can't find it.

Does anyone know where it is?