Comment by jefftk

5 years ago

How would you propose handling this with DNS? Here are some things it covers:

* a.example.com and b.example.com are the same site

* a.co.uk and b.co.uk are not the same site

* a.cloudfront.net and b.cloudfront.net are not the same site

* a.higashikawa.hokkaido.jp and b.higashikawa.hokkaido.jp are not the same site

* a.example.higashikawa.hokkaido.jp and b.example.higashikawa.hokkaido.jp are the same site

There is a proposal to do something similar using response headers and .well-known urls: https://github.com/privacycg/first-party-sets