--On Sunday, September 19, 2021 2:10 AM +0200 hw <hw at gc-24.de> wrote: > So how/where do find I this DUID on my server? <https://redhatlinux.guru/2019/07/01/find-duid-on-rhel-and-centos-servers/> <https://askubuntu.com/questions/712159/how-can-i-find-out-my-systems-dhcpv6-duid> My desktop has it in /var/lib/NetworkManager. I haven't yet figured out what generates it or how it gets set on a server, as my servers don't have one (that I can find). My suspicion is that it gets generated from the UUID setting for the interface in /etc/sysconfig/network-scripts/ifcfg-*.