Version 12 MobiLink clients are incompatible with versions of the MobiLink server before 12.0.0.
The version 12 MobiLink server can be used with clients that are version 10 or later. To use version 10 or 11 clients, start
the MobiLink server with the -x option. If you need to support earlier clients, you should keep an earlier version of the
MobiLink server to support them.