> On 21 Sep 2017, at 08:08, Davey Song(宋林健) <ljs...@biigroup.cn> wrote:
> 
> In another word, we are facing the fragmented and uncooperative Internet. 
> What should we do ?

Switch it off? Hand it over to ITU control? :-)

The Internet was designed from the outset to work around breakage. Packet 
fragmentation issues will always be with us unfortunately. The networks which 
have these problems will fix them: Darwinism will take care of that eventually. 
Until then everyone else just has to work around them or ignore their 
brokenness. 'coz that's how it works.

We (for some definition of we) might come up with some tools to help identify 
the problem or do some outreach and education to help mend these broken 
networks. However I am sceptical those sort of things will be successful. After 
all we still have nets, servers and middleboxes that can't/won't handle EDNS 
correctly or assume that DNS packets only ever go over UDP and are always < 512 
bytes.

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