Asus DSL-N12HP User Manual page 156

ENABLE IGMP MULTICAST PROXY
Tick the checkbox to enable Internet Group Membership Protocol
(IGMP) multicast. This protocol is used by IPv4 hosts to report
their multicast group memberships to any neighboring multicast
routers.
NO MULTICAST VLAN FILTER
Tick the checkbox to Enable/Disable multicast VLAN filter.
Enable WAN interface with base MAC
Enable this option to use the router's base MAC address as the
MAC address for this WAN interface.
3. Choose an interface to be the default gateway.
Click Next to continue or click Back to return to the previous step.
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