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RFC 6887, "Port Control Protocol (PCP)", April 2013

Source of RFC: pcp (int)

Errata ID: 3621
Status: Verified
Type: Technical
Publication Format(s) : TEXT

Reported By: Stuart Cheshire
Date Reported: 2013-05-14
Verifier Name: Ted Lemon
Date Verified: 2013-05-15

Section 15.1 says:

   In requests where the requested Lifetime is 0, the Suggested External
   Address and Suggested External Port fields MUST be set to zero on
   transmission and MUST be ignored on reception, and these fields MUST
   be copied into the assigned external IP address and assigned external
   port of the response.

It should say:

   In requests where the requested Lifetime is 0, the Suggested External
   Port field MUST be set to zero on transmission and MUST be ignored on
   reception. The Suggested External Address field must be set to the
   appropriate all-zeros address, depending on whether the request is
   deleting a mapping for an External IPv4 address or an External IPv6
   address. Both the Suggested External Address and Suggested External
   Port fields are copied into the assigned external IP address and
   assigned external port of the response.

Notes:

Since a given internal address+port can have *two* mappings -- an IPv4 one and an IPv6 one -- the deletion request needs to signify which one is being deleted.

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