OpenDNS, or anyone for that matter, should never see 100.64/10 ip's. If they do, something is wrong at the source, and OpenDNS wouldn't be able to reply anyway (or at least have the reply route back to the user).
 

-----Original message-----
From: Aled Morris via NANOG <nanog@nanog.org>
Sent: Tue 09-11-2018 11:57 am
Subject: Re: OpenDNS CGNAT Issues
To: cb.list6@gmail.com;
CC: NANOG <nanog@nanog.org>;

 

Incidentally, I hope OpenDNS considers 100.64.0.0/10 as space that can't be registered to any end-user.

 

Aled