[ns] About UDP connection ways

[Shen Ren]

Dear friends,
	When I want to connect A and B node with node C using UDP
agents, should I create two sink at the node C, and connect with udp
agents on node A and B???

	Which means which of the following ways is correct?
	A udp------------------------->sink<-------------------------udp
B
							   C

Or
	A udp------------------------>sink
								C
	
Sink<---------------------------udp B

	Thank you for all of ur ideas....
Regards,
Shen Ren