REF: https://adam.younglogic.com/2017/10/vm-ip-virsh/
I presume the VM should be up and running for the following commands to work.
HOSTNAME="rhel75"
MAC=$(virsh domiflist $HOSTNAME | awk '{ print $5 }'| tail -2 | head -1)
arp -a | grep $MAC | awk '{ print $2 }' | sed 's/[()]//g'