Total Commander ignores the connection and neither shows it in the drive button bar nor offers the drive L: for selection in the drive dropdown list. For Total Commander is the drive L: not connected.

The Windows Explorer however can handle the drive L: normally. Also the net use command shows drive L: as connected in the list.
Using the TC connect network drive menu command, the drive L: shows no connection bound to the drive.

I found this behaviour on my Windows 7 PC only, on the Win XP machine works TC as it should.
Unfortunately I'm not allowed to link the screenshots, but I can send them any time to you.