My W7 64-bit laptop runs FLM, with numerous FGL's all pointing to it, and numerous versions of GWC/GAS all runnning through IIS, and everything runs as expected wether I am connected to my office, home, client, airport, or hotel network or not. Even my Linux VM's on the laptop can point to this FLM.
I'm not sure what would be different about Linux or why the Media sensing feature would have an impact. Do you specify flm.server="localhost"
I'd expect this config to work because for the likes of myself who are out and about from time to time, thats the type of setup we require to handle the multiple versions we have available.
... actually my VMWare Network Adapters are still up and running when I'm disconnected from physical and wifi networks