Attention standalone network attached device vendors like large copier manufacturers:
Please train your onsite personnel in understanding that a DHCP assigned address is not always a "Dynamic" address. Please help them understand that there is such a beast as "Static Allocation DHCP" or "Address Reservation". And that Static DHCP gives the equipment *the same address* every time. And help them realize that the equipment will work just fine on the network and won't magically just break. And that I can change every part of the network properties without touching the dumb box or it's crappy web/console interface. Please also train them to not go behind a client's back who gives explicit instructions on keeping the DHCP option enabled (and then enabling a static address on the device).