draft-ietf-ipngwg-pppext-ipv6cp-02.txt   draft-ietf-ipngwg-pppext-ipv6cp-03.txt 
Internet Engineering Task Force Internet Engineering Task Force
INTERNET-DRAFT Dimitry Haskin INTERNET-DRAFT Dimitry Haskin
Expires October 1996 Ed Allen Expires November 1996 Ed Allen
<draft-ietf-ipngwg-pppext-ipv6cp-02.txt> Bay Networks, Inc. <draft-ietf-ipngwg-pppext-ipv6cp-03.txt> Bay Networks, Inc.
IP Version 6 over PPP IP Version 6 over PPP
Status of this Memo Status of this Memo
This document is an Internet-Draft. Internet-Drafts are working This document is an Internet-Draft. Internet-Drafts are working
documents of the Internet Engineering Task Force (IETF), its documents of the Internet Engineering Task Force (IETF), its
areas, and its working groups. Note that other groups may also areas, and its working groups. Note that other groups may also
distribute working documents as Internet-Drafts. distribute working documents as Internet-Drafts.
skipping to change at page 7, line 4 skipping to change at page 7, line 4
this option, Configure-Rej is sent. this option, Configure-Rej is sent.
A new Configure-Request SHOULD NOT be sent to the peer until normal A new Configure-Request SHOULD NOT be sent to the peer until normal
processing would cause it to be sent (that is, until a Configure- processing would cause it to be sent (that is, until a Configure-
Nak is received or the Restart timer runs out). Nak is received or the Restart timer runs out).
A new Configure-Request MUST NOT contain the Interface-Token option A new Configure-Request MUST NOT contain the Interface-Token option
if a valid Interface-Token Configure-Reject is received. if a valid Interface-Token Configure-Reject is received.
Reception of a Configure-Nak with a suggested Interface-Token Reception of a Configure-Nak with a suggested Interface-Token
different from that of the last Configure-Nak sent to the peer
indicates a unique Interface-Token. In this case a new Configure-
Request MUST be sent with the token value suggested in the last
Configure-Nak from the peer. But if the received Interface-Token Configure-Nak from the peer. But if the received Interface-Token
is equal to the one sent in the last Configure-Nak, a new is equal to the one sent in the last Configure-Nak, a new
Interface-Token MUST be chosen. In this case, a new Configure- Interface-Token MUST be chosen. In this case, a new Configure-
Request SHOULD be sent with the new tentative Interface-Token. Request SHOULD be sent with the new tentative Interface-Token.
This sequence (transmit Configure-Request, receive Configure- This sequence (transmit Configure-Request, receive Configure-
Request, transmit Configure-Nak, receive Configure-Nak) might Request, transmit Configure-Nak, receive Configure-Nak) might
occur a few times, but it is extremely unlikely to occur occur a few times, but it is extremely unlikely to occur
repeatedly. More likely, the Interface-Tokens chosen at either end repeatedly. More likely, the Interface-Tokens chosen at either end
will quickly diverge, terminating the sequence. will quickly diverge, terminating the sequence.
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Type Type
1 1
Length Length
6 6
Interface-Token Interface-Token
The 32-bit Interface-Token which is very likely to be unique The 32-bit Interface-Token which is very likely to be unique on
to one end of the link or zero if a good sources of uniqueness the link or zero if a good source of uniqueness can not be found.
can not be found.
Default Default Token Value
No Interface-Token is selected. If no valid interface token can be successfully negotiated,
no default Interface-Token value should be assumed. The procedures
for recovering from such a case are unspecified. One approach is
to manually configure the interface token of the interface.
4.2. IPv6-Compression-Protocol 4.2. IPv6-Compression-Protocol
Description Description
This Configuration Option provides a way to negotiate the use of This Configuration Option provides a way to negotiate the use of
a specific IPv6 packet compression protocol. The IPv6-Compression- a specific IPv6 packet compression protocol. The IPv6-Compression-
Protocol Configuration Option is used to indicate the ability to Protocol Configuration Option is used to indicate the ability to
receive compressed packets. Each end of the link must separately receive compressed packets. Each end of the link must separately
request this option if bi-directional compression is desired. By request this option if bi-directional compression is desired. By
 End of changes. 5 change blocks. 
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