Roon ARC - Multiple NAT error

Roon Core Machine

<!- MacBook Air 2020 i5 8GB →

I’m getting the following error when trying to set up ARC:
{
“connectivity”: {“status”:“NetworkTimeout”,“status_code”:998,“error”:“”},
“external_ip”: {“actual_external_ip”:“1.145.29.100”,“router_external_ip”:“0.0.0.0”},
“status”: “status”: MultipleNatFound
,
“natpmp_autoconfig”: {“server_ip”:“192.168.0.1”,“found_natpmp”:true},
“upnp_autoconfig”: {“server_ip”:“192.168.0.1”,“found_upnp”:true}
}

I’ve tried to follow the troubleshooting but no luck so far. I have a Telstra 5G with a 5g Home Modem.

Networking Gear & Setup Details

Connected Audio Devices

Number of Tracks in Library

Description of Issue

Chances are they CGNAT, nothing you can do unless they offer a public IP address purchase option.