RFC 6458, "Sockets API Extensions for the Stream Control Transmission Protocol (SCTP)", December 2011

Errata ID: 4921
Status: Held for Document Update
Type: Technical
Publication Format(s) : TEXT
Reported By: Jonathan Leighton
Date Reported: 2017-02-02
Held for Document Update by: Martin Duke
Date Held: 2020-04-27

Section 9.1 says:

If sd is an IPv4 socket, the addresses passed must be IPv4 addresses.
If the sd is an IPv6 socket, the addresses passed can either be IPv4
or IPv6 addresses.

It should say:

If sd is an IPv4 socket, the passed addresses must be IPv4 addresses.
If sd is an IPv6 socket, the passed addresses must be IPv6 addresses.
Use IPv4-mapped IPv6 addresses to bind an IPv6 socket to an IPv4
address. Note that some implementations optionally allow IPv4 addresses
to be passed in directly.

Notes:

The erratum is a subtle change in meaning that would be a useful clarification.

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