Re: OpenDNS CGNAT Issues

[Owen DeLong <owen () delong com>]

> On Sep 11, 2018, at 21:58 , Christopher Morrow <morrowc.lists () gmail com> wrote:
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> On Tue, Sep 11, 2018 at 9:06 PM Jerry Cloe <jerry () jtcloe net <mailto:jerry () jtcloe net>> 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).
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> 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?

They’d only be able to do one such agreement per routing environment.

Managing that would be _UGLY_ for the first one and __UGLY__ at scale for anything more than one.

It also pretty much eliminates potential for geographic diversity and anycast for a provider in a local geography.

Certainly not something I’d choose to do if I were OpenDNS unless someone arrived with a very large truck full of gold, 
diamonds, or other valuable hard assets.

Owen