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

[Beniamino Galvani]

On Tue, Sep 12, 2023 at 01:00:22PM +0200, Andreas B wrote:
> 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?

Hi,

flag IFA_F_STABLE_PRIVACY is set when stable-privacy addr-gen-mode is
done by kernel, which is not the case with NM because NM generates
addresses from user-space.

In the end, you shouldn't rely on that flag when using NM, what is
important is if the actual address is stable-privacy or eui64.

Beniamino
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 833 bytes
Desc: not available
URL: <https://lists.freedesktop.org/archives/networkmanager/attachments/20230912/0d59b6df/attachment.sig>