Both the “router_external_ip”:“10.0.0.191” and the “MultipleNatFound” suggest that you have two routers in your home network since each router is a Nat layer. The ip address 10.0.0.191 is reserved for private networks and so should not be be issued to the WAN side of a router by the ISP.
I suspect that what you describe as a cable modem - the Xfinity - is actually a modem/router combined device. If this is the case, you may be able to put the Xfinity device into ‘Modem only’ or ‘bridge’ mode.
For more details see:
Once this is done, you may find that ARC starts working.
Note: Once you put the Xfinity device into ‘Modem Only’ or ‘Bridge’ mode, the Wifi from that device will be disabled and only one device can be connected via ethernet. This one device should be your Eero router. Also, any network security offered by the Xfinity will be disabled and your Eero will take entire responsibility for that.
Hi @William_Krauss,
Welcome to the Roon community! I’m sorry to hear that a problem brought you here, but I’m glad Roon is working properly for you again. If you run into issues in the future, please let us know. We’ll be happy to help!