Returns IPv6 if no IPv4 is available, default ''
Returns IPv6 if no IPv4 is available, default ''

Nikea/VisTrails,minesense/VisTrails,celiafish/VisTrails,Nikea/VisTrails,hjanime/VisTrails,VisTrails/VisTrails,celiafish/VisTrails,minesense/VisTrails,minesense/VisTrails,celiafish/VisTrails,hjanime/VisTrails,VisTrails/VisTrails,minesense/VisTrails,celiafish/VisTrails,VisTrails/VisTrails,VisTrails/VisTrails,hjanime/VisTrails,VisTrails/VisTrails,hjanime/VisTrails,minesense/VisTrails,Nikea/VisTrails,Nikea/VisTrails,hjanime/VisTrails