One thing I *strongly* agree with: the sentence at 2.2:
The effective MTU for IPv6 is 1280 bytes.
This is looking compellingly awful, but true to me. I think there is enough
pMTU breakage that its safer to MSS clamp down. The downside cost in
apparent efficiency has been beaten to death, its a non-issue for me right
now. We even see broken tunnel heads which report back with pMTU the size
of the *outer* packet shroud, so tell 1400 byte packets to resend at ...
1400 bytes. FAIL.
cheers
-George
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