diff --git a/predefine-vm/define-vm.sh b/predefine-vm/define-vm.sh
index 93f05a5..11bff46 100755
--- a/predefine-vm/define-vm.sh
+++ b/predefine-vm/define-vm.sh
@@ -1,189 +1,35 @@
 #!/bin/bash -xe
 
-VM_MGM_BRIDGE_DISABLE=${VM_MGM_BRIDGE_DISABLE:-false}
-VM_CTL_BRIDGE_DISABLE=${VM_CTL_BRIDGE_DISABLE:-false}
-VM_MGM_BRIDGE_NAME=${VM_MGM_BRIDGE_NAME:-"br-mgm"}
-VM_CTL_BRIDGE_NAME=${VM_CTL_BRIDGE_NAME:-"br-ctl"}
-VM_MGM_NETWORK_NAME=${VM_MGM_NETWORK_NAME:-"mgm_network"}
-VM_CTL_NETWORK_NAME=${VM_CTL_NETWORK_NAME:-"ctl_network"}
-VM_MEM_KB=${VM_MEM_KB:-"12589056"}
-VM_CPUS=${VM_CPUS:-"4"}
-# optional params if you won't use bridge on host
-VM_MGM_NETWORK_GATEWAY=${VM_MGM_NETWORK_GATEWAY:-"192.168.56.1"}
-VM_MGM_NETWORK_MASK=${VM_MGM_NETWORK_MASK:-"255.255.255.0"}
-VM_CTL_NETWORK_GATEWAY=${VM_CTL_NETWORK_GATEWAY:-"192.168.57.1"}
-VM_CTL_NETWORK_MASK=${VM_CTL_NETWORK_MASK:-"255.255.255.0"}
+functionsFile="$(pwd)/functions.sh"
+
+if [[ ! -f ${functionsFile} ]]; then
+  echo "ERROR: Can not find 'functions' libfile (${functionsFile}), check your mcp/mcp-common-scripts repo."
+  exit 1
+else
+  source ${functionsFile}
+fi
 
 if [[ -z ${VM_NAME} ]]; then
   echo "ERROR: \$VM_NAME not set!"
   exit 1
 fi
-if [[ ! -f ${VM_SOURCE_DISK} ]] || [[ -z ${VM_SOURCE_DISK} ]]; then
+if [[ -z ${VM_SOURCE_DISK} ]] || [[ ! -f ${VM_SOURCE_DISK} ]]; then
   echo "ERROR: \$VM_SOURCE_DISK not set, or file does not exist!"
   exit 1
 fi
-if [[ ! -f ${VM_CONFIG_DISK} ]] || [[ -z ${VM_CONFIG_DISK} ]]; then
+if [[ -z ${VM_CONFIG_DISK} ]] || [[ ! -f ${VM_CONFIG_DISK} ]]; then
   echo "ERROR: \$VM_CONFIG_DISK not set, or file does not exist!"
   exit 1
 fi
 
-function check_packages {
-    PACKAGES="libvirt-bin qemu-kvm"
-    for i in $PACKAGES; do
-       dpkg -s $i &> /dev/null || { echo "Package $i is not installed!"; exit 1; }
-    done
-}
-
-function create_network {
-    local network=${1}
-    virsh net-destroy ${network} 2> /dev/null || true
-    virsh net-undefine ${network} 2> /dev/null || true
-    virsh net-define ${network}.xml
-    virsh net-autostart ${network}
-    virsh net-start ${network}
-}
-
-function create_bridge_network {
-    local network=$1
-    local bridge_name=$2
-    cat <<EOF > $(pwd)/${network}.xml
-<network>
-  <name>${network}</name>
-  <forward mode="bridge"/>
-  <bridge name="${bridge_name}" />
-</network>
-EOF
-    create_network ${network}
-}
-
-function create_host_network {
-    local network=$1
-    local gateway=$2
-    local netmask=$3
-    local nat=${4:-false}
-    cat <<EOF > $(pwd)/${network}.xml
-<network>
-  <name>${network}</name>
-  <bridge name="${network}" />
-  <ip address="${gateway}" netmask="${netmask}"/>
-EOF
-    if [[ "${nat}" =~ [Tt]rue ]]; then
-        cat <<EOF>> $(pwd)/${network}.xml
-  <forward mode="nat"/>
-EOF
-    fi
-    cat <<EOF>> $(pwd)/${network}.xml
-</network>
-EOF
-    create_network ${network}
-}
-
 check_packages
 
-# Template definition
-cat <<EOF > $(pwd)/${VM_NAME}-vm.xml
-<domain type='kvm'>
-  <name>$VM_NAME</name>
-  <memory unit='KiB'>$VM_MEM_KB</memory>
-  <currentMemory unit='KiB'>$VM_MEM_KB</currentMemory>
-  <vcpu placement='static'>$VM_CPUS</vcpu>
-  <resource>
-    <partition>/machine</partition>
-  </resource>
-  <os>
-    <type >hvm</type>
-    <boot dev='hd'/>
-  </os>
-  <features>
-    <acpi/>
-  </features>
-  <clock offset='utc'>
-    <timer name='rtc' tickpolicy='catchup'/>
-    <timer name='pit' tickpolicy='delay'/>
-    <timer name='hpet' present='no'/>
-  </clock>
-  <pm>
-    <suspend-to-mem enabled='no'/>
-    <suspend-to-disk enabled='no'/>
-  </pm>
-  <devices>
-    <emulator>/usr/bin/kvm-spice</emulator>
-    <disk type='file' device='disk'>
-      <driver name='qemu' type='qcow2' cache='none'/>
-      <source file='$VM_SOURCE_DISK'/>
-      <target dev='vda' bus='virtio'/>
-      <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
-    </disk>
-    <disk type='file' device='cdrom'>
-      <driver name='qemu' type='raw'/>
-      <source file='$VM_CONFIG_DISK'/>
-      <backingStore/>
-      <target dev='hda' bus='ide'/>
-      <readonly/>
-      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
-    </disk>
-EOF
-if [[ "${VM_MGM_BRIDGE_DISABLE}" =~ [Ff]alse ]]; then
-    create_bridge_network "${VM_MGM_NETWORK_NAME}" "${VM_MGM_BRIDGE_NAME}"
-    cat <<EOF >> $(pwd)/${VM_NAME}-vm.xml
-    <interface type='bridge'>
-      <source bridge='$VM_MGM_BRIDGE_NAME'/>
-      <model type='virtio'/>
-      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
-    </interface>
-EOF
-else
-    create_host_network "${VM_MGM_NETWORK_NAME}" "${VM_MGM_NETWORK_GATEWAY}" "${VM_MGM_NETWORK_MASK}" true
-    cat <<EOF >> $(pwd)/${VM_NAME}-vm.xml
-    <interface type='network'>
-      <source network='$VM_MGM_NETWORK_NAME'/>
-      <model type='virtio'/>
-      <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
-    </interface>
-EOF
-fi
+#### Make sure that both files are saved to system path which is available for libvirt-qemu:kvm
+export VM_SOURCE_DISK=$(place_file_under_libvirt ${VM_SOURCE_DISK})
+export VM_CONFIG_DISK=$(place_file_under_libvirt ${VM_CONFIG_DISK})
+export CREATE_NETWORKS=${CREATE_NETWORKS:-true}
 
-if [[ "${VM_MGM_BRIDGE_DISABLE}" =~ [Ff]alse ]]; then
-    create_bridge_network "${VM_CTL_NETWORK_NAME}" "${VM_CTL_BRIDGE_NAME}"
-    cat <<EOF >> $(pwd)/${VM_NAME}-vm.xml
-    <interface type='bridge'>
-      <source bridge='$VM_CTL_BRIDGE_NAME'/>
-      <model type='virtio'/>
-      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
-    </interface>
-EOF
-else
-    create_host_network "${VM_CTL_NETWORK_NAME}" "${VM_CTL_NETWORK_GATEWAY}" "${VM_CTL_NETWORK_MASK}"
-    cat <<EOF >> $(pwd)/${VM_NAME}-vm.xml
-    <interface type='network'>
-      <source network='$VM_CTL_NETWORK_NAME'/>
-      <model type='virtio'/>
-      <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/>
-    </interface>
-EOF
-fi
-
-cat <<EOF >> $(pwd)/${VM_NAME}-vm.xml
-    <serial type='pty'>
-      <source path='/dev/pts/1'/>
-      <target port='0'/>
-    </serial>
-    <console type='pty' tty='/dev/pts/1'>
-      <source path='/dev/pts/1'/>
-      <target type='serial' port='0'/>
-    </console>
-    <graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1'>
-      <listen type='address' address='127.0.0.1'/>
-    </graphics>
-    <rng model='virtio'>
-      <backend model='random'>/dev/random</backend>
-    </rng>
-  </devices>
-</domain>
-EOF
-
-echo "INFO: rendered VM config:"
-cat $(pwd)/${VM_NAME}-vm.xml
+render_config "${VM_NAME}" "${VM_MEM_KB}" "${VM_CPUS}" "${VM_SOURCE_DISK}" "${VM_CONFIG_DISK}" "${CREATE_NETWORKS}"
 
 virsh define $(pwd)/${VM_NAME}-vm.xml
 virsh autostart ${VM_NAME}