STUN - No contact from CPE (EHOSTUNREACH)

Hi,
My setup with STUN server (coturn) and getting “EHOSTUNREACH” final of the message. But i didn’t find any comment what it means. Anybody has experience like this genieacas with stun setup ?

Sep 09 09:31:49 event: outgoing UDP message
Sep 09 09:31:49 timestamp: 2022-09-09T09:31:49.939Z
Sep 09 09:31:49 remoteAddress: 100.101.96.12
Sep 09 09:31:49 deviceId: CC32E5-IGD-319A153003578
Sep 09 09:31:49 remotePort: 3478
Sep 09 09:31:49 body: “GET http://100.101.96.12:3478?ts=1662715909&id=2033624830&un=CC32E5-IGD-319A153003578&cn=c0010f0356d64451&sig=33f3028d7eb949b89fb5eeca6e8fce5dd8b1f45e HTTP/1.1\r\nHost: 100.101.96.12:3478\r\n\r\n”
Sep 09 09:31:50 —
Sep 09 09:31:50 event: outgoing HTTP request
Sep 09 09:31:50 timestamp: 2022-09-09T09:31:50.455Z
Sep 09 09:31:50 remoteAddress: 192.168.88.253
Sep 09 09:31:50 deviceId: CC32E5-IGD-319A153003578
Sep 09 09:31:50 connection: null
Sep 09 09:31:50 remotePort: “7547”
Sep 09 09:31:50 method: GET
Sep 09 09:31:50 url: /tr069
Sep 09 09:31:50 headers:
Sep 09 09:31:50 host: 192.168.88.253:7547
Sep 09 09:31:50 error: connect EHOSTUNREACH 192.168.88.253:7547