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I had this exact issue and solved it by disabling "Mobile Data Always Active" in the Developer Options on my LineageOS phone.

After this change, my connection has been completely stable. I'm not sure of the exact reason it works, but it was the definitive solution after days of random freezes. I previously had a few reliable ways to trigger the problem, and none of them can reproduce the freeze anymore. I really hope that this fix is the final solution.

For reference, I'm using the official WireGuard Android app.
A few other settings in my configuration:

• In the Android app's settings, "Allow background usage" is enabled.
• Tap on that text (not just the toggle) to open advanced battery options and set it to "Unrestricted".
• Persistent keepalive is not set on my phone's peer configuration.
• My OPNsense router has a static IP.
• To account for my ISP's PPPoE overhead, I also set the MTU on my WireGuard server to 1412.

As a final measure, I rooted my phone to install the WireGuard kernel module. However, disabling the "Mobile Data Always Active" setting was the key fix that resolved the freezing.

The issue was on my side. I enabled the 'Track Interface' option when first setting up the router without fully understanding its purpose or functionality. After taking the time to research and read about how 'Track Interface' works, I now recognize that the problem stemmed from my own misconfiguration. Thank you for the replies.

Good day everyone.

After upgrading to OPNsense 22.7, I noticed that the Router Advertisement Daemon (radvd) is failing with the following error:

"/usr/local/sbin/pluginctl: The command '/usr/local/sbin/radvd -p /var/run/radvd.pid -C /var/etc/radvd.conf -m syslog' returned exit code '1', the output was '/var/etc/radvd.conf:3 error: syntax error'"

/var/etc/radvd.conf

Code Select Expand

# Automatically generated, do not edit
# Skipping unsupported unknown interface lan

After this, I went to my LAN interface and simply clicked Apply, which resulted in the following error:

"The following input errors were detected:
The DHCPv6 Server is active on this interface and it can be used only with a static IPv6 configuration. Please disable the DHCPv6 Server service on this interface first, then change the interface configuration."

My LAN IPv6 Configuration Type is set to "Track Interface".

ISC DHCPv4, ISC DHCPv6, and Kea DHCPv6 are all disabled on the LAN interface.
I only use Kea DHCPv4.

Is this a problem with the new OPNsense update or is the problem on my side?