The value of the object tmnxDhcpServerCfgSendForceRenews specifies
whether the server is allowed to send a DHCP FORCERENEW message to
DHCP clients.
If tmnxDhcpServerCfgSendForceRenews is set to 'true(1)',
then the server will send a DHCP FORCERENEW message to the client
when its configuration changes in such a way that the clients need to
renew their lease in order to obtain the new parameters. This will
be the case when, for example, an option is added to a subnet.