[e2e] is IP address portability next?

Henning Schulzrinne hgs at cs.columbia.edu
Fri Dec 5 11:57:51 PST 2003

>       particular Internet access port.  The string entered by typical users is
>       already independent of the network service provider.

Excepting maybe 20 million or so users (in the US) that have @aol.com 
addresses, in addition to the others that have ISP-provided email 
addresses. Given that most ISPs now prevent users from running MTAs and 
that they enforce using a From address reflecting the ISP, most 
non-technical residential users only have two choices: use their ISP 
domain or use a webmail provider such as Yahoo or Hotmail.

> Obviously, I mean that the Internet equivalent to a telephone number is
> a domain name.

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