Use MAC to block Traffic via Adguard?

Hey guys,

so I know I have to use DHCP to block Traffic via MacAddress by Adugard. I am curious tho, if it needs to be the build in DHCP of Adguard or if I can use the Plugin of HA to use the DHCP of Home Assistant?

Also I am curious if there is a step by step guide to not brick anything?

Since usually my FritzBox handles DHCP. But I would love to filter by MacAddress.
The Issue I encounter from time to time is, that Adguard / HA cannot connect to IPv6 and thefore the DNS Resolve for IPv6 fails and I have no clue how to fix that.

So I through using DHCP of Adguard might help.