This test is incorrect, and we do not need the modprobe. If macvlan is a
module, it is automatically modprobed when the first macvlan link is
added. Also, the /sys directory referred to in the test does not exist
if macvlan is built into the kernel.
Reported-by: Marien Zwart <marienz@gentoo.org>
X-Gentoo-Bug: 396427
X-Gentoo-Bug-URL: https://bugs.gentoo.org/show_bug.cgi?id=396427
759f4ca4f2