Fred,
I was thinking of tunnels as legacy applications, but we may need to make this
explicit.
Ron
>
> You missed tunnels. The tunnel has no way of knowing whether the source
> host is doing RFC4821-style probing, so it has no way of knowing when
> to drop vs forward. All it knows is that it MUST pass packets of at
> least 1280 bytes (the IPv6 minMTU), and SHOULD also pass packets of at
> least 1500 bytes (the minimum size most hosts expect). For that, it
> needs some form of fragmentation and reassembly, and if you want to
> deprecate IPv6 fragmentation you need to replace it with something like
> SEAL.
>
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