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cacfaa1c89
It can happen that udev has an event for an interface in the queue that has already gone away - or even just being renamed. Then reading the MAC address fails. Because the shell expands the "$(<...)" statement before running the whole line, the read check is useless. Because the code would get too complicated otherwise, I decided to use cat. Not cool, but this does the job. Signed-off-by: Michael Tremer <michael.tremer@ipfire.org> Signed-off-by: Arne Fitzenreiter <arne_f@ipfire.org>