Comment 1 for bug 53711

It's more than this quotationmarks:

I've an Interface in my system called ?0. This interface is not recognized right and therefore it goes into the cat command line. I worked around this with a regex:

    for DEVICE in /sys/class/net/[a-zA-Z]* ; do

This is now my line 7 in state-funcs.

It could be a solution for normal use of device names.