### virsh
## bridge setup - delete default bridge
virsh net-destroy default
virsh net-undefine default

# Create new ifn_bridge1, sn_bridge1 and bcn_bridge1
cat > /tmp/ifn1.xml << EOF
<network>
  <name>ifn1_bridge1</name>
  <uuid>f19c3580-3364-4ab0-bc7b-b22074e70048</uuid>
  <forward mode='nat'/>
  <bridge name='ifn1_bridge1' stp='on' delay='0'/>
  <mac address='52:54:00:e1:ac:a2'/>
  <domain name='ifn1_bridge1'/>
  <ip address='192.168.122.1' netmask='255.255.255.0'>
    <dhcp>
      <range start='192.168.122.128' end='192.168.122.254'/>
    </dhcp>
  </ip>
</network>
EOF

cat > /tmp/ifn2.xml << EOF
<network>
  <name>ifn2_bridge1</name>
  <uuid>8635bed6-2f0e-4274-a0f2-e12c7951870f</uuid>
  <forward mode='nat'/>
  <bridge name='ifn2_bridge1' stp='on' delay='0'/>
  <mac address='52:54:00:e1:b2:b3'/>
  <domain name='ifn2_bridge1'/>
  <ip address='192.168.222.1' netmask='255.255.255.0'>
    <dhcp>
      <range start='192.168.222.128' end='192.168.222.254'/>
    </dhcp>
  </ip>
</network>
EOF

cat > /tmp/bcn1.xml << EOF
<network>
  <name>bcn1_bridge1</name>
  <uuid>5b7605d0-6ec5-4530-b28e-86b681c07801</uuid>
  <bridge name='bcn1_bridge1' stp='on' delay='0'/>
  <mac address='52:54:00:bc:cc:6f'/>
  <domain name='bcn1_bridge1'/>
</network>
EOF

cat > /tmp/bcn2.xml << EOF
<network>
  <name>bcn2_bridge1</name>
  <uuid>ba8cf0bf-d69c-44b2-8f60-72ef66448035</uuid>
  <bridge name='bcn2_bridge1' stp='on' delay='0'/>
  <mac address='52:54:00:bc:dd:6f'/>
  <domain name='bcn2_bridge1'/>
</network>
EOF

cat > /tmp/sn1.xml << EOF
<network>
  <name>sn1_bridge1</name>
  <uuid>4a46283d-b7ac-4e75-9c90-5bee35ed6bf8</uuid>
  <bridge name='sn1_bridge1' stp='on' delay='0'/>
  <mac address='52:54:00:9c:26:b8'/>
  <domain name='sn1_bridge1'/>
</network>
EOF

cat > /tmp/sn2.xml << EOF
<network>
  <name>sn2_bridge1</name>
  <uuid>713799c7-fcc4-46f6-b4c8-fbe9d9605edd</uuid>
  <bridge name='sn2_bridge1' stp='on' delay='0'/>
  <mac address='52:54:00:9c:37:c9'/>
  <domain name='sn2_bridge1'/>
</network>
EOF

# Define them
virsh net-define /tmp/ifn1.xml
virsh net-define /tmp/ifn2.xml
virsh net-define /tmp/bcn1.xml
virsh net-define /tmp/bcn2.xml
virsh net-define /tmp/sn1.xml
virsh net-define /tmp/sn2.xml

# Set them to auto-start
virsh net-autostart ifn1_bridge1
virsh net-autostart sn1_bridge1
virsh net-autostart bcn1_bridge1

# Start the networks up
virsh net-start ifn1_bridge1
virsh net-start sn1_bridge1
virsh net-start bcn1_bridge1

### Nested VM support
rmmod kvm-intel
if [ ! -e '/etc/modprobe.d/dist.conf.original' ]
then
    if [ -e '/etc/modprobe.d/dist.conf' ]
    then
        cp /etc/modprobe.d/dist.conf /etc/modprobe.d/dist.conf.original
    fi
fi
echo 'options kvm-intel nested=y' >> /etc/modprobe.d/dist.conf
modprobe kvm-intel

### NOTE:
# Make sure node VMs have:
# https://docs.fedoraproject.org/en-US/quick-docs/using-nested-virtualization-in-kvm/index.html