packet's order ?

["Zhu Xiaogang" <zxg60481@mail1.sjtu.edu.cn>]

Hi, all,

  I send some packets by multicast in a for(;;) loop, but They are received
out of order by receivers. The topology is simple as below.

#node 3 and 0 are receivers, node 2 is sender.
#
#          |3|
#           |
#  |0|-----|1|
#           |
#          |2|
#

  I don't know the schedule method of the ns system, and how to send a batch
of packets and will be received in order?
  Any help will be appreciated!

        ZXG