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The Status for IPv6: Theory It’s non-controversial that different values can be used An IANA registry exists and multiple assignments have already been made It’s not clear if existing values can be overloaded RFC2711 is ambiguous Overloading might be an efficiency gain or an efficiency loss, and we can get away without it ? more text for the extensibility draft to say don’t do this It’s non-controversial that GIST should play well with existing nodes RFC2711 is clear that unknown values should be silently ignored (which presumably means that the packet is forwarded unchanged) We need to make stronger statements about Q-mode fragmentation being absolutely forbidden |