In article <HrR3i.1065$u56.957@newssvr22.news.prodigy.net>,
yellowgirlnc@yahoo.com says...
> On Sun, 20 May 2007 04:43:18 GMT, Constipated wrote:
>
> > The only place that I have seen MAC address cloning usefull
> > is on the public side of a router/firewall on a DSL connection
>
> MAC address cloning is also useful when you have two computers sharing the
> same hotel wired or wireless Internet connection. Most, if not all, hotel
> Internet connections base themselves on the MAC address.

The last hop is MAC address based even when you are on tcp/ip. Being MAC
address based is more a function of the DHCP server than anything else
allthough there are other things you can do with the MAC address. The
last hop part is more a function of the switch built into the
firewall/router.

> So, you pick an easy to remember MAC address such as DEADBEEFCAFE and both
> your computers work fine on the same connection. Only one at a time of
> course.

Get yourself a cheap firewall/router and use both computers at the same
time. You do need to check that the hotel is not using the same numbers
as you firewall/router is dishing out. 10.255.255.x would work as good
as anything for your firewall/router to dish out. Most devices and most
prople use 192.168.x.x You could get away with using 1.0.0.x but you
are not supposed to as they are reserved numbers.

> You're more likely to win the lottery than to have two MAC addresses of the
> same number on the same ISP at the same time given the nearly infinite
> addresses you can come up with.

It is almost impossible to run into trouble if you use non zeros in the
first 6 digits. The first 6 digits are the chip manufactures ID code
and I have not seen one that does not have a zero in it. The remaining
6 digits are the unique chip ID for that manufacturer.

There was one brand of wireless NIC (can't remember wich elcheepo brand
it was) that all shipped with the same MAC address. This caused a lot
of people a lot of trouble. That is what happens when the manufacturer
does not follow the rules of inter operability.