If unsure, say N.
+config IPV6_MROUTE
+ bool "IPv6: multicast routing (EXPERIMENTAL)"
+ depends on IPV6 && EXPERIMENTAL
+ ---help---
+ Experimental support for IPv6 multicast forwarding.
+ If unsure, say N.
+
+config IPV6_PIMSM_V2
+ bool "IPv6: PIM-SM version 2 support (EXPERIMENTAL)"
+ depends on IPV6_MROUTE
+ ---help---
+ Support for IPv6 PIM multicast routing protocol PIM-SMv2.
+ If unsure, say N.
+