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RFC 7413, "TCP Fast Open", December 2014

Source of RFC: tcpm (wit)
See Also: RFC 7413 w/ inline errata

Errata ID: 4239
Status: Verified
Type: Technical
Publication Format(s) : TEXT
Reported By: Matthew Luckie
Date Reported: 2015-01-22
Verifier Name: Martin Stiemerling
Date Verified: 2015-10-31

Section 4.2.1 says: 

   1. The client sends a SYN packet with a Fast Open option with a
      Length field of 0 (empty cookie field).

It should say:

   1. The client sends a SYN packet with a Fast Open option with a
      Length field of 2 (empty cookie field).

Notes:

A Nil fast-open option has an option length of 2. A length field of zero would mean an invalid TCP option.

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