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RFC 4241, "A Model of IPv6/IPv4 Dual Stack Internet Access Service", December 2005

Source of RFC: INDEPENDENT
See Also: RFC 4241 w/ inline errata

Errata ID: 3462
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: Pengfei Liu
Date Reported: 2013-01-16
Verifier Name: Nevil Brownlee
Date Verified: 2014-02-03

Section 3 says: 

          |---Configure-Request-->| \
          |<--Configure-Request---|  |
          |<----Configure-Nak-----|  | PPP Network Layer Protocol Phase
          |<----Configure-Ack-----|  | (IPCP)
          |---Configure-Request-->|  |
          |<----Configure-Ack-----| /

It should say:

          |---Configure-Request-->| \
          |<--Configure-Request---|  |
          |<----Configure-Nak-----|  | PPP Network Layer Protocol Phase
          |-----Configure-Ack---->|  | (IPCP)
          |---Configure-Request-->|  |
          |<----Configure-Ack-----| /

Notes:

Wrong IPCP process in Figure 2.
In the IPCP phase of original Figure 2, there're both Configure-Nak and Configure-Ack for the first Configure-Request and it's impossible. The first Configure-Ack in IPCP phase of original Figure 2 should be sent to PE from CPE.

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