Trying to run a game (Victor Vran) via vglrun (or optirun....) results in

woodstock:game% vglrun ./VictorVranGOG 
[VGL] ERROR: Could not load GLX/OpenGL functions
[VGL]    /usr/lib/libvglfaker.so: undefined symbol: glXGetProcAddressARB

strange thing is that an 'nm /usr/lib/libvglfaker.so' lists that symbol...

Other applications like glxspheres or google-earth-pro do not show this issue. 
Difference *might* be that the game is a 32bit application.

I had reported it upstream (https://github.com/VirtualGL/virtualgl/issues/139)
but they claim it's a packaging issue.

Indeed, slapping together their official i386 and x64 rpms and installing them
manually does not produce the above error, it works both with vglrun and
optirun (using the NVidia core of my Optimus).

I've tried both the version of Tumbleweed (2.6.4-1.2) and from the
X11:Bumblebee repo (2.6.4-49.4).