8. Change Log
US-ASCII replaced by UTF-8.
Added notes on Proxy.
Framed-IP-Address should contain the actual IP address of the user.
If Acct-Session-ID was sent in an access-request, it must be used in the accounting-request for that session.
New values added to Acct-Status-Type.
Added an IANA Considerations section.
Updated references.
Text strings identified as a subset of string, to clarify use of UTF-8.