71D-Link DSL-226 User Manual
Section 4 - Conguration
IGMP
Enable Snooping
Support:
Enable and disable Internet Group Management Protocol (IGMP)
snooping to build multicast tables.
IGMP Proxy:
Check the box to enable the router to operate as an Internet Group
Management Protocol (IGMP) proxy for IPv4 trac.
Click Save when you are done.
The Internet Group Management Protocol (IGMP) allows for the transmission
of identical content, such as multimedia, from a source to a number of
destination recipients.