[IP-SFS] Possible error in RFC 4824

[Clive D.W. Feather]

Dear Sirs,

There appears to be some errors in RFC 4284, for which you are listed as
authors.

In section 3.4, the encodings for V/KAL and Y/RTT should be:

                   SFS       |0      \0__
                              |\      |
                             / \     / \
                              V       Y
                   IP-SFS    KAL     RTT

The forms you show actually encode the SFSes Y and M respectively.  Could
you please confirm that interfaces should use the correct forms for SFSes
V and Y for these control signals rather than those in the RFC text?

In addition, you have omitted three other SFSes that, like Z, are unused in
IP-SFS:

                   SFS       \0      |0/      0
                              |\      |      |||
                             / \     / \     /X\
                            erase  numbers  space

You will find the first two in [JCroft] and all three in [Wikipedia].

Yours sincerely

-- 
Clive D.W. Feather  | Work:  <clive at demon.net>   | Tel:    +44 20 8495 6138
Internet Expert     | Home:  <clive at davros.org>  | Fax:    +44 870 051 9937
Demon Internet      | WWW: http://www.davros.org | Mobile: +44 7973 377646
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