OpenDNS CGNAT Issues

Christopher Morrow morrowc.lists at
Wed Sep 12 04:58:36 UTC 2018

On Tue, Sep 11, 2018 at 9:06 PM Jerry Cloe <jerry at> wrote:

> 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).

maybeopendns peers directly with such an eyeball network? and in that case
maybe they have an agreement to accept traffic from the 100.64 space?

> -----Original message-----
> *From:* Aled Morris via NANOG <nanog at>
> *Sent:* Tue 09-11-2018 11:57 am
> *Subject:* Re: OpenDNS CGNAT Issues
> *To:* cb.list6 at;
> *CC:* NANOG <nanog at>;
> Incidentally, I hope OpenDNS considers as space that can't
> be registered to any end-user.
> Aled
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <>

More information about the NANOG mailing list