when determining stable network interface names. This may be used to revert
to naming schemes of older udev versions, in order to provide more stable
naming across updates. This environment variable takes precedence over the
- kernel command line option `net.naming-scheme=`, except if the value is
+ kernel command line option `net.naming_scheme=`, except if the value is
prefixed with `:` in which case the kernel command line option takes
precedence, if it is specified as well.