libvirt nat example

ocp42.xml

[admin@lunchbox01 openshift-home-lab]$ sudo virsh net-dumpxml ocp42
<network>
  <name>ocp42</name>
  <uuid>c6bcc01b-8dec-4801-a053-7b87a84c2bbd</uuid>
  <forward mode='nat'>
    <nat>
      <port start='1024' end='65535'/>
    </nat>
  </forward>
  <bridge name='virbr1' stp='on' delay='0'/>
  <mac address='52:54:00:b6:0d:7f'/>
  <domain name='compute.local'/>
  <dns>
    <srv service='etcd-server-ssl' protocol='tcp' domain='poc.lunchnet.example' target='etcd-0.poc.lunchnet.example' port='2380' weight='10'/>
    <srv service='etcd-server-ssl' protocol='tcp' domain='poc.lunchnet.example' target='etcd-1.poc.lunchnet.example' port='2380' weight='10'/>
    <srv service='etcd-server-ssl' protocol='tcp' domain='poc.lunchnet.example' target='etcd-2.poc.lunchnet.example' port='2380' weight='10'/>
    <host ip='192.168.50.2'>
      <hostname>bootstrap.compute.local</hostname>
    </host>
    <host ip='192.168.50.1'>
      <hostname>api-int.poc.lunchnet.example</hostname>
      <hostname>api.poc.lunchnet.example</hostname>
    </host>
    <host ip='192.168.50.10'>
      <hostname>master-0.compute.local</hostname>
      <hostname>etcd-0.poc.lunchnet.example</hostname>
    </host>
    <host ip='192.168.50.11'>
      <hostname>master-1.compute.local</hostname>
      <hostname>etcd-1.poc.lunchnet.example</hostname>
    </host>
    <host ip='192.168.50.12'>
      <hostname>master-2.compute.local</hostname>
      <hostname>etcd-2.poc.lunchnet.example</hostname>
    </host>
  </dns>
  <ip address='192.168.50.1' netmask='255.255.255.0'>
    <dhcp>
      <range start='192.168.50.10' end='192.168.50.250'/>
      <host mac='52:54:00:a8:32:02' name='bootstrap.compute.local' ip='192.168.50.2'/>
      <host mac='52:54:00:a8:32:0a' name='master-0.compute.local' ip='192.168.50.10'/>
      <host mac='52:54:00:a8:32:0b' name='master-1.compute.local' ip='192.168.50.11'/>
      <host mac='52:54:00:a8:32:0c' name='master-2.compute.local' ip='192.168.50.12'/>
      <host mac='52:54:00:a8:32:0d' name='compute-0.compute.local' ip='192.168.50.13'/>
      <host mac='52:54:00:a8:32:0e' name='compute-1.compute.local' ip='192.168.50.14'/>
      <host mac='52:54:00:a8:32:0f' name='compute-2.compute.local' ip='192.168.50.15'/>
    </dhcp>
  </ip>
</network>