Intermittent ARC connection with Xfi router

[Paul_Monticciolo]

Roon Core Machine

Device name	DESKTOP-GG6TMRK
Processor	Intel(R) Core™ i7-8700K CPU @ 3.70GHz 3.70 GHz
Installed RAM	32.0 GB (31.8 GB usable)
Device ID	274C06BC-8C3A-46E1-8F7A-0B38E839D994
Product ID	00325-96249-30841-AAOEM
System type	64-bit operating system, x64-based processor
Pen and touch	No pen or touch input is available for this display

Edition	Windows 11 Home
Version	22H2
Installed on	‎10/‎5/‎2022
OS build	22621.1848
Experience	Windows Feature Experience Pack 1000.22642.1000.0

Networking Gear & Setup Details

Xfinity Xfi

Connected Audio Devices

Everything works except intermittent connectivity to Roon Core via ARC

Number of Tracks in Library

7317

Description of Issue

Sometimes ARC connects and sometimes it does not. Typically I can restore connectivity via a computer reboot. I tried port forwarding through the Xfinity app and it does not see the Roon Core but sees many other connected devices. Their instructions specifically mention that they do not support IPv6 but that is what my screenshot attachment shows. Any ideas as to how to overcome this intermittent problem would be greatly appreciated.
Thanks,
Paul

[noris]

Hi @Paul_Monticciolo ,

Do you by any chance have XFinity Contstant Guard enabled?

“Are you online? Please check your internet connection and try again" [Solved Xfinity firewall]

I’ve been reading round on Comcast’s Xfinity and it seems like there are a lot of complaints regarding its over zealous security measures, i.e. it blocks access to legitimate sites. If you have the Xfinity app or visit the xFi website you may be able to turn off advanced security using the following article as a guide: I have no idea if this will help, but it’s probably worth a try.

@Paul_Monticciolo

Sometimes ARC connects and sometimes it does not. Typically I can restore connectivity via a computer reboot

How often does this happen, once a day? Does this happen when the IP address of the Roon Core changes? If you try to disable IPv6 on your Roon Core, does this change the behavior?

To Disable IPv6:

Use the shortcut, Windows Key + X to open the Control Panel.
Open Network and Internet.
Open Network and Sharing Center.
Click Change Adapter Settings.
Right-click your connection and go to Properties.
Uncheck the box next to Internet Protocol Version 6 (TCP/IPv6) to disable