ICMPv6 "too-big" packets ignored (filtered ?) by Cloudflare farms

Fri Mar 8 14:09:28 UTC 2019

On 2019-03-08 14:45, Brandon Martin wrote:
> On 3/8/19 8:38 AM, Saku Ytti wrote:
>> Hey,
>>
>>>      now for UDP, I don't know yet how does things like QUIC can be handled ...
>>
>> Unfortunately the magic answer you were hoping does not exist, what
>> they do is they just send smaller packets.
>>
> 
> What we almost seem to be moving toward in this discussion is an IP header where the path can reduce the reported MTU which can then be read at the receiving end.  This would be somewhat like ECN just with more than a couple bits.

Something like what I once described in:
https://jeroen.massar.ch/archive/drafts/draft-massar-v6man-mtu-label-02.txt

? :)

Greets,
 Jeroen