Update libvirt default
network configuration to allow DHCP clients on network to resolve the gists netboot.ipxe
configuration file via `sudo virsh net-edit default:
<network xmlns:dnsmasq='http://libvirt.org/schemas/network/dnsmasq/1.0'>
<name>default</name>
<uuid>38632f35-0edb-48e5-8a2c-b6b159c1938f</uuid>
<forward mode='nat'>
<nat>
<port start='1024' end='65535'/>