The `systemd-udev` package installs
`"/usr/lib/systemd/network/99-default.link"`,
which sets `Link.MACAddressPolicy=persistent`. This proposal is to
change it to set `Link.MACAddressPolicy=none` to stop changing the MAC
address. This is particularly important for bridge and bond devices.
This change can either only apply to bridge/bond devices, or to
various software devices. That is to be discussed.
IMHO, the default should be "none" for all devices. I do not see why systemd
spoofs MAC addresses by default.
Kevin Kofler