[Xen-users] xen-3.0.4 networking problem after migration

[Weikuan Yu <weikuan.yu@xxxxxxxxx>]

Hello,

I am facing an networking problem for xen migration. I used to have it 
working fine. But as I worked with several trees, I lost track on the 
correct configuration I should have.
The problem is as this, with xen-3.0.4 on CentOS-4.4. I can install xen, 
start xend, and create domU, all fine.
# xend start (on both nodes)
# ssh node02 xend start

Then create a domU on node01
# xm create -c cvm.01

At this point, I can ping this domU from many different nodes in the 
subnet. Then, I migrate it to node02
# xm migrate cvm.01 -l node02

Right after the migration, I can no long ping the domU. This domU now 
can only be ping'ed from the new host, node02. Interestingly, if I 
migrate the same domU back to node01. Pinging works fine again from many 
different nodes.
Anybody has seen this before? I know xen-3.0.4 is old by now. But want 
to avoid a new installation if possible.
Can somebody offer a hint? Any help is appreciated.

-- Weikuan

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