I'm also affected by this bug. The IRC #ltsp chan at freenode told me to fill a bug report. My server runs a Ubuntu Gnome 14.04 64bits, using Epoptes 0.5.7 I got the same error trying the wol.py script.
They told me to type the wol.py command, and another ip command : http://pastebin.com/RyPNbGwy
I can provide any information you ask.
I'm also affected by this bug.
The IRC #ltsp chan at freenode told me to fill a bug report.
My server runs a Ubuntu Gnome 14.04 64bits, using Epoptes 0.5.7
I got the same error trying the wol.py script.
They told me to type the wol.py command, and another ip command : http:// pastebin. com/RyPNbGwy
I can provide any information you ask.