Tim wrote: > > I haven't come across that (yet). I'm familiar with the issue of some > ISPs remembering the MAC of the device that connects to their network > (the DSL modem), but not come across that issue on the client side. > > ISP ---- modem/router ---- client PC > (gets IP from (gets IP from > ISP using DHCP) (modem using DHCP) > > All the modem routers I've played with act as an internal DHCP server > that give an IP out to every device connected to it, by default, > automatically. It'd be a really dumb thing to have to power cycle them > for everything that gets connected to your LAN. > > Modems in bridge mode are another matter. The ISP sees the PC's NIC, > uses its MAC, expects the same one all the time. > > ADSL Modems without a router (i.e. just one LAN port on them) are > something I've not played with. > For residential and small commercial, the ADSL modems without a router have been the norm in the areas I have worked in. From the fact that just about all firewall/routers sold for their use have the clone MAC address feature, I am extrapolating that it is common in most of the U.S. The online support for the firewall/router's tends to support this as well. For cable modems, Road Runner support used to, and probably still does list power cycling the modem as a requirement when you change the NIC. I know at least osme of the modems they still have in the field require it. (I ran into it a month ago...) This only applies when you have a dynamic, or one static IP address. Things change drastically when you have a commercial account with more then one IP address. But the hardware also tends to change as well. Mikkel -- Do not meddle in the affairs of dragons, for thou art crunchy and taste good with Ketchup!
