#!/bin/sh -e
#
# ip-dhcp-host.sh - add or remove a mac address --> ipv4 mapping

action="$1"
network_name="$2"
mac_address="$3"
ipv4_address="$4"

[ "$action" != 'add' ] && [ "$action" != 'delete' ] && printf 'you must set $action to either add or delete (1st arg)\n' && exit 1
[ "$network_name" = '' ] && printf 'you must set $network_name (2nd arg)\n' && exit 1
[ "$mac_address" = '' ] && printf 'you must set $mac_address (3rd arg)\n' && exit 1
[ "$ipv4_address" = '' ] && printf 'you must set $ipv4_address (4th arg)\n' && exit 1

virsh net-update "$network_name" "$action" ip-dhcp-host "<host mac='$mac_address' ip='$ipv4_address' />" --live --config