Obtain KVM guest IPv4 or IPv6 from MAC adddress

virsh-get-ip.sh

#!/bin/bash
#

function get_ip {
  # Obtain the IPv4 or IPv6 address

  VERSION=$1

  # Use arp to find the IP address you're looking for via its MAC address:
  IP=$(ip -$VERSION neighbor show | grep $MAC_ADDRESS | awk  '{ print $1 }' )
  echo $IP
}

export VM_NAME=$1

export MAC_ADDRESS=`virsh dumpxml $VM_NAME | grep "mac address" | sed "s/.*'\(.*\)'.*/\1/g"`

if [ "$2" == "v6" ]; then
  get_ip 6
else
  get_ip 4
fi

exit 0