WG,
draft-ietf-softwire-map-08 contains this:
7.3. Backwards compatibility
A MAP-E CE provisioned with only the IPv6 address of the BR, and with
no IPv4 address and port range configured by other means, MUST
disable its NAT44 functionality. This characteristic makes a MAP CE
compatible with DS-Lite [RFC6333] AFTRs, whose addresses are
configured as the MAP BR.
In view of the recent discussions on provisioning, this functionality
strikes me as useless. There would be no reason for an ISP to use such
provisioning. A unified CPE would just do DS-Lite if that's what's
available.
I suggest to remove that section.
Simon
--
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