named tunnel on remote webdriver connection

I'm interested in using the remote web driver testing capabilities, I'm using the python selenium library.

I need to run the automated tests from private locations, I think that the cbttunnels solution could work, provided I used different named tunnels,

however, the documentation does not indicate a way to select a named tunnel with w3c integration.

The documentation seems to indicate that the "latest tunnel" is used for automated tests, is there a way to specify which tunnel should be used, perhaps through a capability?