sergey-safarov commented on this pull request.
@@ -4,18 +4,16 @@ Wants=network-online.target
After=network-online.target
[Service] -Type=forking +Type=simple +User=kamailio
To change username at runtime need place drop-in into `/run/systemd/system/kamailio.service.d` directory and apply changes by `systemctl daemon-reload` For dynamic unit updates you cannot use `/etc/systemd/system/kamailio.service.d` directory.
Also you can use [service templates](https://fedoramagazine.org/systemd-template-unit-files/)