D-Link DSL-2740M User Manual page 30

Section 3 - Configuration
DHCP PD Enable: Enable or disable DHCP-PD for other IPv6 routers connected to
the LAN interface. Note: This feature requires a smaller subnet
prefix than /64 (i.e. allowing for a larger address allocation), such
as /63. Contact your ISP for more information.
MLD Proxy: Enable to allow IPv6 multicast traffic to pass through the router
from the Internet.
Proceed to Virtual Circuit Settings on page 30.
D-Link DSL-2740M User Manual
PPPoE/PPPoA (continued)
26