SMC Networks WGBR14-N - annexe 1 Manual page 98

Depending on the type of WAN connection, you can take one of the following sets of
actions:
DHCP Connection
Clicking the DHCP Release button unassigns the router's IP address. The router will
not respond to IP messages from the WAN side until you click the DHCP Renew
button or power-up the router again. Clicking the DHCP Renew button causes the
router to request a new IP address from the ISP's server.
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