one MAC address for two static DHCP IP-MAC mappings

[lchlaw]

using FS 6.0.7 version

configured multiple network segments.
192.168.0.0 / 255.255.0.0 and 172.16.0.0 /255.255.252.0

A mobile is moving between two hotspot sites and i need to configure static IP-MAC mapping and assign client pass-through (IP).

However, I found that the DHCP doesn't assign a fixed IP for the mobile in both sites.

Static configuration
172.16.2.157 00-60-08-AF-6B-D4
192.168.1.102 00-60-08-AF-6B-D4


DHCPservice*.log
(Run) 2: request received [Thu Mar 29 12:12:44 2012]
(LookupClientData) Client [00-60-08-AF-6B-D4] configured IP [192.168.69.137]
(Run) 2: Message type [3], Host name [A301-2107]
(Run) 2: bClientIsConfigured
(Run) 2: requested_address [192.168.69.137]
(LookupClientData) Client [00-60-08-AF-6B-D4] configured IP [192.168.69.137]
(ProcessRequest) 2: Response: hand out the configured IP address
(ProcessRequest) 2: ipaddr==requested_address, PreparePositiveResponse
(Run) 2: Sending a response to the client
(Run) 2: bc->sendto returns OK
(Run) 2: Finish..........