IPv6: multicast routing (EXPERIMENTAL)

configname: CONFIG_IPV6_MROUTE

Linux Kernel Configuration
└─>Networking support
└─>Networking options
└─>The IPv6 protocol
└─>IPv6: multicast routing (EXPERIMENTAL)
In linux kernel since version 2.6.26 (release Date: 2008-07-13)  
Experimental support for IPv6 multicast forwarding.
If unsure, say N.

depends
CONFIG_EXPERIMENTAL
CONFIG_INET
CONFIG_IPV6
CONFIG_NET