" 1. In some cases, especially those dealing with third party call
control (see Section 4.2 of [12]), there arises a need to specify
the IPv6 equivalent of the IPv4 unspecified address (0.0.0.0) in
the SDP offer. For this, IPv6 implementations MUST use a domain
name within the .invalid DNS top-level domain instead of using
the IPv6 unspecified address (i.e., ::)."
Can somebody recall the reason for this? Both "0.0.0.0" and "::" mean "unspecified" in their respective IP versions.
John
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