We trying to test 3CX v5 on a server at SoftLayer.com, where each server has two NICs, one with a private IP for your VLAN, and one with the public IP. 3CX seems to be using the private IP/NIC instead of the public one. How can I change this? The evidence which leads me to suspect this: [CM506004]: STUN request to STUN server 188.8.131.52 has timed out; used Transport: 10.4.0.16:5060 10.4.0.16 is our internal IP/NIC used for local traffic only. The STUN request should be going out over the other NIC in the machine. I can't seem to find any configuration option to correct this.