--On Sunday, September 19, 2021 3:02 PM +0200 hw hw@gc-24.de wrote:
None of this is working because the server isn't running a DHCPv6 server, and there seems to be no file in /var/lib/NetworkManager that would seem to be helpful.
Isn't there a tool that creates the DUID and prints it? This can't be too difficult ...
I found this thread that suggests that NetworkManager computes it every time unless it's manually overridden:
https://gitlab.freedesktop.org/NetworkManager/NetworkManager/-/issues/135
Based on that, nmtui-connect might do what you want.