How to get different UID using Dynamic Users with socket activation?

I'm following the [Dynamic Users with systemd](https://0pointer.net/blog/dynamic-users-with-systemd.html) post and creating the waldo.socket and waldo.service. Here is my waldo.socket. [Socket] ListenStream=2048 Accept=yes And the corresponding waldo@.service [Service] ExecStart=-sleep 300 DynamicUser=yes It works nicely, but I discovered that all sleep 300 are launched with the same UID. $ ps fax -o uid,pid,cmd | grep sleep 61647 87279 sleep 300 61647 87282 sleep 300 61647 87285 sleep 300 I'd like to have each instance of the service using a distinct UID, as is implied in that article > By combining dynamic user IDs with socket activation you may easily implement a system where each incoming connection is served by a process instance running as a different, fresh, newly allocated UID within its own sandbox. **What am I doing wrong ?**