This read-write setting selects which version of RIP routing this LAN interface uses, disable, v1, v2-broadcast, or v2-multicast, where V2 multicast restricts route updates to only RIP V2-compliant devices on the segment. Choosing v2-multicast rather than v2-broadcast reduces unnecessary processing on non-RIP devices sharing the LAN, since only devices that join the RIP multicast group receive the updates. For example, on a LAN segment with mixed RIP V1 and V2 routers where an administrator wants to keep compatibility with all listeners, choosing v2-broadcast(3) still reaches every device, whereas v2-multicast(4) would exclude devices not listening for RIP multicast.