If you want to compile it as a module, say M here and read
<file:Documentation/modules.txt>. If unsure, say `N'.
+config NF_CONNTRACK_IPV6
+ tristate "IPv6 support for new connection tracking (EXPERIMENTAL)"
+ depends on EXPERIMENTAL && NF_CONNTRACK
+ ---help---
+ Connection tracking keeps a record of what packets have passed
+ through your machine, in order to figure out how they are related
+ into connections.
+
+ This is IPv6 support on Layer 3 independent connection tracking.
+ Layer 3 independent connection tracking is experimental scheme
+ which generalize ip_conntrack to support other layer 3 protocols.
+
+ To compile it as a module, choose M here. If unsure, say N.
+
endmenu