messing with DNS, was Thank you, Comcast.

John Levine johnl at
Fri Feb 26 18:03:56 UTC 2016

>Every ISP I have felt with that messes with the DNS, has no valid opt-out
>other than using different DNS.  The opt-out they use is a HTTP cookie,
>which only works for web browsers.  It doesn't work for any other program.

T-W and I am fairly sure Comcast have per-customer opt-out from DNS
"enhancement".  T-W's is at

I still don't use their DNS caches, but that's not the reason.


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