Those are not required with systemd-udevd v210 or newer. This way
distros which have a new enough version of udev can skip installing
84-nm-drivers.rules. While at it, don't use absolute paths for sed and
ethtool.
This reverts commit 44fee0f6ff.
Bad quoting here. Also, this is not quite the best fix for the issue,
filtering on ACTION=="add" is probably a bit more elegant.
ethtool may cause the auto-loading of a kernel module for non-existing
interface-names. Avoid that by checking whether such an interface exists.
This is inherently racy.
There are some out-of-tree drivers that create devices masquerading as
ethernets which are supposed to use their own management tools. Avoid touching
them.
The rules should be run after 80-net-setup-link.rules, so that the
ID_NET_DRIVER is set.
