As you can see from http://pastebin.freeswitch.org/18299, I have a Snom handset successfully registered with my FreeSwitch instance over an OpenVPN connection.

As per the trace, I can make outbound calls without issue.  But inbound, FreeSwithc seems to think I am not registered when I am ?

To make absolutley sure I am registered, I have issued a " sofia profile <profile_name> flush_inbound_reg reboot" and sure enough, the Snom unit reboots and re-registeres without issue.