[Yeti DNS Discuss] 答复: 答复: Dealing with IPv6 Fragmentation in the DNS

'Stephane Bortzmeyer' bortzmeyer at nic.fr
Tue Sep 5 10:30:18 UTC 2017


On Tue, Sep 05, 2017 at 06:09:02PM +0800,
 Davey Song <ljsong at biigroup.cn> wrote 
 a message of 9 lines which said:

> > ipv6 operators who don't permit the necessary extension headers
> > and icmp messages to enter or leave their networks/hosts/apps must
> > suffer.
> 
> The ASes in the middle may drop the fragments!

According to RFC 7872 measurements (a must read, even if it is about
extension headers, not specifically about fragments), problems occur
mostly at the edge. Lot of good eradings in its references, too.

30.51% of Web servers do not receive fragments. Between 5.08% and
6.78% are before the destination AS.


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