On Sunday, September 19, 2021 6:53:45 PM CEST Kenneth Porter wrote:
> --On Sunday, September 19, 2021 3:02 PM +0200 hw <hw@xxxxxxxx> 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>
That might mean that I would need to extract the functions from the soruces of
dhclient to make a program that prints DUID(s) for the machine you run it on.
... But that isn't so easy. Maybe I can find out how to create a DUID and
write something in perl; it doesn't seem to be too complicated in the source.
The comment is interesting:
/*
* The "best" default DUID, since we cannot predict any information
* about the system (such as whether or not the hardware addresses are
* integrated into the motherboard or similar), is the "LLT", link local
* plus time, DUID. For real stateless "LL" is better.
*
* Once generated, this duid is stored into the state database, and
* retained across restarts.
*
* For the time being, there is probably a different state database for
* every daemon, so this winds up being a per-interface identifier...which
* is not how it is intended. Upcoming rearchitecting the client should
* address this "one daemon model."
*/
I don't understand what the point of a DUID is which is /not/ a per-interface
identifier. When I assign addresses via DHCP, I don't want them to end up
being assigned anywhere else than to the interface they need to be assigned
to. What is intended with these DUIDs?
> Based on that, nmtui-connect might do what you want.
That seems to only allow to bring up or down a connection but doesn't display
DUIDs?
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