on an Ubuntu server acting as an DHCPv6 client with netplan set like this
renderer: networkd
dhcp6: true
I received an IPv6 address but I need the DUID to create a static lease on a router.
I did a lot of research on the internet but I found no answer. All the mentioned files do not exist :
/var/lib/dhcp/is empty/etc/dhcp/dhclient6.confdoes not exist
I know that systemd-networkd generate DUID using the machine-id from the /etc/machine-id file.
We can change the way DUID is generated by editing /etc/systemd/networkd.conf networkd.conf manpages
I don't know where to find the DUID.
I can find it on my router (under OpenWRT) to be able to set a static lease.
Is it permanent ?
If for any reason, for example, I decide to install an dhcp server package on my server, is there a chance that the DUID will change ?
thank's
[edit 2021-04-15] I face this issue after installing pihole (which installed dnsmasq). The DUID change from something like 00020000... to 00010000...
