DHCP option 43 for vendor specific information does not take into account the vendor class identifier. All DHCP clients receive the same value for DHCP option 43, regardless of the vendor class identifier (DHCP request option 60) submitted to the Firebox DHCP server.

No workaround is available at this time. You could deploy a third-party DHCP server in environments that use a vendor class identifier in the DHCP request.