I might have good news from Snagoma, I have found a new driver version 7.0.25.1.
I have tested it on a fresh install of centos7 with yum updates install. all installed fine, next im going to install a fresh install of centos 7 with yum updates then netinstall AV13, I will get back to you all
Link to new driver: ftp://ftp.sangoma.com/linux/current_wanpipe/wanpipe-7.0.25.1.tgz
Adam