How exactly should I map uid/gid for lxd (non-snap)?

Thanks for the information !

So this mean LXD understand the entry for lxd user as an “alias” to the entry for “root” user ? Or do I need to keep both ?

Going out of the subject here just for being curious (: May I ask how exactly the mapping is done in the case both root:100000:65536 and root:1000:1 exist ? Does this mean 1001 will then be mapped to 1001000 instead of 1001001 ?