I am using oVirt 3.5 and have configured NAT by extnet hooks.
I'm suffering this situation:

vm: 192.168.122.160
host: 192.168.0.120
gateway: 192.168.0.1
vm can reach outside network but cannot reach host.

I've diff an original libvirt vm and a ovirt based vm but I cannot see any obvious difference.

Please help me out of this...
Thank you very much.

This is the NAT configuration.

<network>
  <name>default</name>
  <uuid>ea0eb0cf-b507-451c-9f0d-919675ea7d8a</uuid>
  <forward mode='nat'/>
  <bridge name='virbr0' stp='on' delay='0'/>
  <mac address='52:54:00:c1:18:e4'/>
  <ip address='192.168.122.1' netmask='255.255.255.0'>
    <dhcp>
      <range start='192.168.122.2' end='192.168.122.254'/>
    </dhcp>
  </ip>
</network>