Here is what I see in coturn startup:
sep 13 10:25:51 darkstone turnserver[760]: 0: : NO EXPLICIT LISTENER ADDRESS(ES) ARE CONFIGURED sep 13 10:25:51 darkstone turnserver[760]: 0: : ===========Discovering listener addresses: ========= sep 13 10:25:51 darkstone turnserver[760]: 0: : Listener address to use: 127.0.0.1 sep 13 10:25:51 darkstone turnserver[760]: 0: : Listener address to use: ::1 sep 13 10:25:51 darkstone turnserver[760]: 0: : ERROR: main: Cannot configure any meaningful IP listener address sep 13 10:25:51 darkstone systemd[1]: coturn.service: Scheduled restart job, restart counter is at 5. sep 13 10:25:51 darkstone systemd[1]: Stopped coturn.service - coTURN STUN/TURN Server. sep 13 10:25:51 darkstone systemd[1]: coturn.service: Start request repeated too quickly. sep 13 10:25:51 darkstone systemd[1]: coturn.service: Failed with result 'exit-code'. sep 13 10:25:51 darkstone systemd[1]: Failed to start coturn.service - coTURN STUN/TURN Server. The systemD service is looking at: After=network.target I wonder if changing that to : After=network-online.target would not resolve this issue
