Several IP's for one MAC in a dynamic pool

[#1]

I have several IP's for the same MAC-Adress in an IP-Range. It uses an IPv4 Filter and the MAC is in the List. At this time the MAC gets 8 IP's and i dont know why.

Have some one a clue?

Thanks!

[#2]

DHCP uses unique combination of the MAC address and the Client ID.  As an example, when using PXE boot, the Client ID is different, so the lease used by PXE will be a different IP than the Windows or Linux OS after the PXE boot.