[one-users] can't ping VM successfully

[zhukun1111]

Hi:
   I met some trouble when using oepnebula.pleases help me!I can't ping through the VM which runs on my host,but VM itself seems work successfully,Even migrating VM from 56 to 55 is OK! But I just can't ping through VM ,and don't mention ssh to it.because I got this below:
   
   I have 3 machines with ubuntu9.04 as os.
   202.115.17.54 is front-end.
   202.115.17.56 is node.
   202.115.17.55 is node.

    All of them have just 1 network card with just 1 IP address above.
    
root at ubuntu54:~# brctl show
bridge name     bridge id               STP enabled     interfaces
eth0            8000.0007e90f5520       no              peth0
virbr0          8000.000000000000       yes 

root at ubuntu56:~# brctl show
bridge name     bridge id               STP enabled     interfaces
eth0            8000.feffffffffff       no              peth0
                                                        vif1.0
                                                        vif2.0
virbr0          8000.000000000000       yes 
   
  
  root at ubuntu54:~# onevm list
  ID     NAME STAT CPU     MEM        HOSTNAME        TIME
   4      vm2 runn   0  131072   202.115.17.56 00 00:45:15
   5      vm3 runn   0  131072   202.115.17.56 00 00:37:27

  root at ubuntu54:~# onehost list
 HID NAME                      RVM   TCPU   FCPU   ACPU    TMEM    FMEM STAT
   0 202.115.17.56               2    200    191     50 1047552    1024   on
   1 202.115.17.55               0    200    198    200 1047552   63488   on

  root at ubuntu54:~# onevnet show 0
NID               : 0
UID               : 0
Network Name      : Public
Type              : Fixed
Bridge            : eth0

....: Template :....
        BRIDGE=eth0
        LEASES=IP=202.115.17.2,MAC=50:20:20:20:20:21
        LEASES=IP=202.115.17.3
        LEASES=IP=202.115.17.4
        NAME=Public
        TYPE=FIXED

....: Leases :....
IP = 202.115.17.2   MAC = 50:20:20:20:20:21  USED = 1 VID = 4
IP = 202.115.17.3   MAC = 00:03:ca:73:11:03  USED = 1 VID = 5
IP = 202.115.17.4   MAC = 00:03:ca:73:11:04  USED = 0 VID = -1
 
 
I run this:
   onevm  create  vm.conf
   onevm  deploy  vm 202.115.17.56
the vm.conf is below:
   
NAME   = vm3
CPU    = 0.5
MEMORY = 128
OS     = [
  kernel   = "/boot/vmlinuz-2.6.24-16-xen",
  initrd   = "/boot/initrd.img-2.6.24-16-xen",
  root     = "sda1" ]
DISK   = [
  source   = "/local/images/disk.img",
  target   = "sda1",
  readonly = "no" ]
DISK   = [
  type     = "swap",
  size     = 1024,
  target   = "sdb"]
NIC    = [ NETWORK = "Public" ]


   
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