As the title states:

I am guessing due to some internal matching in the software of AccuFace, it is using the wrong interface for its internal IP
resolution. On my motherboard, I have two hardware Ethernet connection, a gigabit connection...the other 10G connection.
Seems Accuface is defaulting to a private network address that does not match to the computer you are running the software on.

This results in audio not being passed to IClone8 with the message:
"IP address is different: Sound conversion is unavailable due to AccuFACE and iClone running on separate computers.
Audio for Viseme Track > Source > AccuFACE Video File' is disabled."