https://fedoraproject.org/wiki/Changes/RenameNobodyUser, 2018:
> Use "nobody:nobody" as the names for the kernel overflow UID:GID pair, and
> retire the old "nfsnobody" name and the old "nobody:nobody" pair with 99:99
> numbers.
only supporting 16-bit UIDs, NFS or user namespacing.
(The latter can be changed with a sysctl during runtime, but that's not supported on
`systemd`. If you do change it you void your warranty.)
- Because Fedora is a bit confused the `nobody` user is called `nfsnobody` there
- (and they have a different `nobody` user at UID 99).
- I hope this will be corrected eventually though.
(Also, some distributions call the `nobody` group `nogroup`. I wish they didn't.)
3. 4294967295, aka "32-bit `(uid_t) -1`" → This UID is not a valid user ID, as