[Networkmanager] 'stable-privacy' flag not set when using NetworkManager

[Andreas B]

Hi,

When I set 'addr_gen_mode = 3' in sysctl and use `ifup`, I get the
'stable-privacy' flag when listing my interface with `ip a`.
I do not get that flag when using 'addr-gen-mode = stable-privacy'
with NetworkManager.

Why is this? Shouldn't it be set when using NetworkManager?

Best,
Andreas