[UM-LINUX] How to let linux send IGMP V2 packet?

[landsailor]

Hello all,
Linux kernel of 2.4.22 and above(include 2.6.x) send IGMP V3 packets. But I 
want use IGMP V2, Does anyone know how to config to let linux send IGMP V2 
packet?
Thanks!
 
Regards
Song