Has anyone had success in connecting to a Palo Alto Networks 
GlobalProtect vpn with openconnect on another open source client? 
There is a linux GlobalProtect client, which has the distribution names 
CentOS, RHEL and Ubuntu hard coded into it, and looks for them in 
/etc/centos-release and /etc/os-release.  I have managed to use it from 
Scientific Linux by installing an /etc/centos-release file.  My guess is 
that it checks for /etc/centos-release before looking in 
/etc/os-release, but that seems a matter of luck and maybe could change. 
I would rather have a less fragile solution.

Stephen Isard