This is an unsupported release now. Please think to install the next LTS
'Bionic 18.04'
http://cdimage.ubuntu.com/ubuntu-next/daily-live/current/
https://www.omgubuntu.co.uk/2018/02/ubuntu-18-04-minimal-install-option
** Changed in: ifupdown (Ubuntu)
Status: New => Invalid
--
You
This seems to be an old bug, which is also mentioned elsewhere:
https://unix.stackexchange.com/questions/26126/spoofed-mac-address-ignored-by-wpa-supplicant
https://bugs.launchpad.net/neutron/+bug/1193972
Another symptom of this bug is probably inability to connect if you need
the changed MAC
