Re[2]: Capture the MAC address of VPN connecting devices in FreeRadius

In the Calling-Station-Id i get the device IP Address and not the MAC!

How you want to retrieve a MAC if VPN client can be theoretically behind one or more routers and, at all, it can use non-Ethernet link to accessto the VPN server? If you want to get MAC - use PPPoE for clients, or make MAC fixation by scripts, or use something like ipguard...