eventually some web page tests contain requests with
even though the tests are run with user agent Chrome and the original webpage does not contain any links to the aforementioned host.
Re-running the same tests usually results in a run without any of those requests.
This happens on www.webpagetest.org as well as on our local WPT installation.
I suspect Microsoft Windows Update agent to be the culprit.
These requests should not happen during a WPT test run.