We have recently managed to get a fiber link deployed between the two CERN sites: Prevessin (France) and Meyrin (Switzerland). It goes from our lab to the CERN Control Center, then under the border to building near the CERN Globe of Science and Innovation and back the same way to our lab. It is a real fiber installation of about 9 km length in total. We will use it for long term tests of White Rabbit. Since it’s no longer a roll of fiber in the lab, we can check for example the stability of tracking the link changes due to temperature variations over days, weeks and even months.