APM-DHCP Access Policy Example and Detailed Instructions
Just a update, the IPs leased by the sessionID constructed MACs has disappeared so seems the release is working for those, but not the ones leased with the original MAC of the PC. So your WA seems to be solving both issues. I will do some more testing. Thanks!
Edit: Some additional testing shows that a session there is still active disappears on the DHCP server. So that will for sure give issues with duplicate addresses.
Edit 2: I see new leases appears in the DHCP with only 1 hour lease, despite the pool is set to 8 days. Strange why this is changing when using your WA. I will see if I can dig into that.
Edit 3: I found the reason, but I haven't found the why. The DHCP in this case is running in failover hotswap. So for some reason when setting this variable the client only gets offered 1 hour lease (Maximum Client Lead Time set on the failover relationship). I have confirmed this by changing it from 1 hour to 8 and voila the client gets a 8 hour lease. When I revert back to connect with out the variable set the client gets the 8 days defined on the scope. Very strange. I have failed to find the reason for this, as I am not able to see an differences in my captures other than the constructed MAC address.