since https://github.com/jenkinsci/acceptance-test-harness/pull/684 my local setup for running ATHs is completely broken.

All tests fail as firefox can not talk with the proxy.

it looks like before this change remote-webdriver-firefox never used the proxy and post this change it will (unless told not to).

My gut says that the wrong IP address is passed to firefox to use as the proxy on windows.
(given I have to set JENKINS_LOCAL_HOSTNAME I am guessing the proxy uses the wrong address on a multihomed machine and the docker container can not talk to it).

If that is the case and if it is set then we should bind to the same address.