Get the ip4 addr of a domain with arp. (Helper for old versions of virsh).

virsh-domipaddr

#!/bin/sh
#
# Get the ipv4 address of a domain.
#
# Note: This script is obsoleted by modern versions of virsh.
#

name=$1
if [ "x$1" = "x" ]; then
    echo "usage: virsh-domipaddr <name>" >&2
    exit 1 
fi

# Get the first mac address.
mac=`virsh domiflist $name | sed '1,2d; s/  */ /g' | cut -d' ' -f5`
if [ "x$mac" = "x" ]; then
    echo "error: failed to get mac for domain '$name'" >&2
    exit 1
fi

ip=`/usr/sbin/arp -n | awk -v mac=$mac '$3 == mac {print $1}'`
if [ "x$ip" = "x" ]; then
    echo "error: failed to find ip for domain '$name', mac '$mac'" >&2
    exit 1
fi
echo "$ip"