The new udev/systemd 197 introduces the so called predictable network interface names. The netload-plugin does not work with those names. The interface check fails. One reason is that the code limits the maximum length of interface names to 10 characters.
Created attachment 4881 Workaround for extending the maximum interface name size (+10 chars) On Linux, max size definition should rather be retrieved from <net/if.h> (IFNAMSIZ). It is currently 16. So extending from 10 to 20 should be enough for now, but it is not clean. Anyway, this patch allowed be to monitor my wireless interface.
Sadly there apparently has not been a fix in half a year. I'd raise the importance of this one. After all, without the patch the plugin becomes completely defunct on any system with a recent udev (as just happened with me).
Mass-reassign all bugs from florian@ to goodies-dev@, thanks for the maintenance work! (and sorry for the bugmail spam..)
*** This bug has been marked as a duplicate of bug 9869 ***