On some DSL CPE I can use the RFC 2684 Bridged/IP Mode
there are also Bridged and Routed mode for RFC2684.
Bridged should be IP over Ethernet over ATM
Routed seems to be IP over ATM
What the meaning of Bridged/IP ??
My suggestion is that it works like a bridge but it removes the
ethernet framing and add a new mac address at the end of the atm path.