DHCP_addDynamicRange

Description: Adds a dynamic IP range to the dhcpd.conf and restarts the DHCP server.
Parameter:

• firstIP: The first IP marking the begin of the dynamic IP range.
• lastIP: The last IP marking the end of the dynamic IP range.
• netmask: Netmask for the IPs.
• gateway: The gateway IP.

Returns:

• true, if the DHCP server could be restarted with the new settings.