[tptacek]

CDNs threaten the vitality of fundamental Internet infrastructure how? CDNs are the vitality that keeps the fundamental Internet infrastructure relevant.

W.r.t. the NXDOMAIN trickery, though, he's completely right.

[neilc]

Yeah, I was talking more about the NXDOMAIN stuff. As for CDNs, his gripe is with implementing CDNs via DNS, not the CDN concept itself.

[tptacek]

Yeah, and implementing CDN GTM with DNS doesn't threaten the Internet (the NXDOMAIN thing, again, clearly does).