Edimax Technology AR-7266WNA - Manual (Page 57)

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5.2.3.2. DHCP Relay
Some ISPs perform the DHCP server function for their customers’ home/small
office network. In this case, you can configure this device to act as a DHCP relay
agent. When a user’s computer on your network requests Internet access, the
router contacts your ISP to obtain the IP configuration, and then forward that
information to the computer.
Parameter Description
DHCP Server Address Specify the IP address of your ISP’s DHCP server.
Requests for IP information from your LAN interface will
be passed to the default gateway, which should route the
request appropriately.