D-Link DSL-2543B User Manual page 39

Section 3 – Configuration
using DHCP, this can make it difficult to locate a specific host on the LAN
using standard DNS. If for example you are running a public web server or
VPN server on your LAN, this ensures that the host can be located from
the Internet if the public IP address changes. DDNS requires that an
account be setup with one of the supported DDNS providers.
Tick the Enable Dynamic DNS check box, enter the required DDNS
information, click the Apply Settings button, and then click the Reboot
button on the left panel to let your changes take effect to set this
information in the Router.
D-Link DSL-2543B User Manual
DDNS requires that an account be setup with one of the supported
DDNS servers prior to engaging it on the Router. This function will not
work without an accepted account with a DDNS server.
Note
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