First of all, any UID less than 1000 is generally considered a system user/group, I would suspect this tradition or a variation thereof comes from elder days. Yes, arch system users are numbered automatically, but the groups and users you listed are a bit of special snowflakes for systemd. I'm not sure whether remapping them would be possible. What I would recommend to you is to use another range further beyond 1000 for your network users and groups because with regard to what we established in the first paragraph, those don't seem to qualify as system users IMO. And, just to mention it for completness, there is /etc/login.defs where you can theoretically adjust those numbers. cheers! mar77i
