[Xen-users] XEN ip translation issue

[hai feng li <lihaifeng1980@xxxxxxxxx>]

Hi, All,

I am a new comer to Xen. I met similar issue mentioned in below link:
http://www.mail-archive.com/centos@xxxxxxxxxx/msg39805.html

After trying the command provided by Alan to set the MAC to the 
original one, my host machine can connect to the network. But my virtual
 machine still can not connect to the network. One of my colleague said 
the reason is that the ip address of the virtual machine is not 
translated rightly. The ip address of the virtual machine is 
192.168.122.25 like below:
[root@vnet125 ~]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:16:3E:3F:61:75
          inet addr:192.168.122.25  Bcast:192.168.122.255  Mask:255.255.255.0
          inet6 addr: fe80::216:3eff:fe3f:6175/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:48162 errors:0 dropped:0 overruns:0 frame:0
          TX packets:57709 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000

          RX bytes:5544096 (5.2 MiB)  TX bytes:392594536 (374.4 MiB)

When
 I try to run "ping dirham" on the virtual machine, and tcpdump on 
dirham shows that the ip address is still 192.168.122.25, which should 
be the ip address of the host machine.
root@dirham:~# tcpdump ip proto \\icmp
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on eth0, link-type EN10MB (Ethernet), capture size 65535 bytes
15:45:57.615963 IP 192.168.122.25 > dirham: ICMP echo request, id 7443, seq 1, length 64

15:45:58.624726 IP 192.168.122.25 > dirham: ICMP echo request, id 7443, seq 2, length 64
15:45:59.636707 IP 192.168.122.25 > dirham: ICMP echo request, id 7443, seq 3, length 64
15:46:00.636724 IP 192.168.122.25 > dirham: ICMP echo request, id 7443, seq 4, length 64

Does anybody know how to change the configuration to translate the ip address successfully?
Thanks in advance for you help.

Regards,
Haifeng Li
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