[Spread-users] multicast problem, after edited /etc/hosts

[sunnyamoy]

i want to do a 1:n reliable multicast

my conf just :
Spread_Segment 234.5.6.33:29026 {
    localhost 127.0.0.1
}

my test with sptuser, and I snap found:
1. sptuser on deamo machine(a) to another sptuser at other machine(b)
   a send tcp group/sender to b,
   a send tcp message to b,
   b send tcp ack to a,
   b send tcp ack to a
   no multicast !
2. sptuser frome b to a
   b send tcp group/sender to a,
   b send tcp message to a,
   a send ack to b
   the first 3 package just, client send to daemo
   a send tcp group/sender to b,
   a send tcp message to b,
   b send tcp ack to a,
   b send tcp ack to a
   this like 1, just daemo send to client
   still no multicast

when i change conf, add one daemo
  it will add one multicast package, but still send these tcp package. what is reliable multicast? did i understand wrong?
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