Using DHCP-initialized PXELinux under VMWare

When trying to use PXELinux under VMWare, we run into limitations of the configurability of the VMWare DHCP daemon. Simple solution is to let a local ISC DHCP daemon bind to the vmnet network interfaces. When doing so, it is necessary to kill the vmnet-dhcpd.

	Note
	When the VMWare services are restarted, the ISC DHCP daemon will notice that the vmnet interfaces are down, but fail to see them coming up again. It is necessary to restart the DHCP daemon too.