# service rc-local status
● rc-local.service - /etc/rc.local Compatibility
   Loaded: loaded (/lib/systemd/system/rc-local.service; enabled-runtime; vendor preset: enabled)
  Drop-In: /lib/systemd/system/rc-local.service.d
           └─debian.conf
   Active: active (exited) since Sat 2019-04-13 19:55:54 CEST; 1h 52min ago
     Docs: man:systemd-rc-local-generator(8)
  Process: 1366 ExecStart=/etc/rc.local start (code=exited, status=0/SUCCESS)

Apr 13 19:55:54 xxx systemd[1]: Starting /etc/rc.local Compatibility...
Apr 13 19:55:54 xxx rc.local[1366]: net.core.somaxconn = 65535
Apr 13 19:55:54 xxx systemd[1]: Started /etc/rc.local Compatibility.