Question to behavior on fast user switching

[cneuhaeusler]

Setup: iMac M1 running Monterey and 2 users

Use case: Using Wifi Spoof to generate a unique MAC address for each user so that
my Pi-hole can handout unique IP addresses based on them. Handy for the query log and also the group and client management.

Question: When switching between users with fast use switching the MAC address and therefore the IP address doesn't change automatically based on a defined rule but only after manually open the app. No big deal but easy to overlook, any ideas how to solve this? Thanks for any ideas.