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Quick update: I also had a OnePlus 9 5G Pro laying around so I popped the data sim in there and set it up as the failover Gateway. Things seem to be doing just fine after 1-2hrs - no disconnects. So whatever it is, it may very well be related specifically to the Pixel 5 and the USB tethering implementation (I wouldn't think it'd be hardware, but who knows). I'd still be interested in troubleshooting if it could be of value to someone else. Unfortunately, it's a Verizon Pixel 5 with a locked bootloader so I can't put another Android spin on it to test that aspect :(

Hey folks. I'm using a Pixel 5 I had laying around as a failover WAN via USB tethering. Everything works as it should but the ue0 interface disconnects and goes down on its own shortly after coming up (maybe 2 minutes). If I go to the interface in the WebUI and click save/apply without making any changes, it'll grab an IP address and come back up (same if I run dhclient on the interface from the shell). Has anyone else experienced this behavior? Maybe it's something on the android side (could it be lease time?) and I do plan to try a mobile hotspot device vs. the phone once received. It probably goes without saying but when the interface goes down, the associated gateway goes offline rendering my failover setup non-existent. NOTE: I have tried multiple usb cables.

OPNSense version info:

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Type opnsense Version 24.1.2_1
Architecture amd64
Commit d93dbed68


Logs showing disconnects:

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2024-03-02T10:19:27-05:00Noticekernel<6>ue0: Ethernet address: 12:c7:37:ed:82:f0
2024-03-02T10:19:27-05:00Noticekernel<6>ue0: <USB Ethernet> on urndis0
2024-03-02T10:19:27-05:00Noticekernelurndis0: <RNDIS Communications Control> on usbus0
2024-03-02T10:19:27-05:00Noticekernelurndis0 on uhub0
2024-03-02T10:19:27-05:00Noticekernelugen0.2: <Google Pixel 5> at usbus0
2024-03-02T10:19:26-05:00Noticekernelurndis0: detached
2024-03-02T10:19:26-05:00Noticekernelurndis0: at uhub0, port 1, addr 20 (disconnected)
2024-03-02T10:19:26-05:00Noticekernelugen0.2: <Google Pixel 5> at usbus0 (disconnected)
2024-03-02T10:19:11-05:00Noticekernel<6>ue0: Ethernet address: 12:c7:37:ed:82:f0
2024-03-02T10:19:11-05:00Noticekernel<6>ue0: <USB Ethernet> on urndis0
2024-03-02T10:19:11-05:00Noticekernelurndis0: <RNDIS Communications Control> on usbus0
2024-03-02T10:19:11-05:00Noticekernelurndis0 on uhub0
2024-03-02T10:19:11-05:00Noticekernelugen0.2: <Google Pixel 5> at usbus0
2024-03-02T10:19:10-05:00Noticekernelurndis0: detached
2024-03-02T10:19:10-05:00Noticekernelurndis0: at uhub0, port 1, addr 19 (disconnected)
2024-03-02T10:19:10-05:00Noticekernelugen0.2: <Google Pixel 5> at usbus0 (disconnected)
2024-03-02T10:19:02-05:00Noticekernel<6>ue0: Ethernet address: 12:c7:37:ed:82:f0
2024-03-02T10:19:02-05:00Noticekernel<6>ue0: <USB Ethernet> on urndis0
2024-03-02T10:19:02-05:00Noticekernelurndis0: <RNDIS Communications Control> on usbus0
2024-03-02T10:19:02-05:00Noticekernelurndis0 on uhub0


Any thoughts? TIA!