[Bug 285142] security/tailscale: version 1.80.0_1 - tailscale0 interface goes DOWN frequently on multiple systems

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285142

            Bug ID: 285142
           Summary: security/tailscale: version 1.80.0_1 - tailscale0
                    interface goes DOWN frequently on multiple systems
           Product: Ports & Packages
           Version: Latest
          Hardware: amd64
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: ashish@FreeBSD.org
          Reporter: jim@maenpaa.us
             Flags: maintainer-feedback?(ashish@FreeBSD.org)
          Assignee: ashish@FreeBSD.org

Created attachment 258266
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=258266&action=edit
more detailed logs from two systems

Since upgrading to version 1.80.0_1, the tailscale0 interface goes down
frequently on multiple systems at the same time.

Here are some samples from /var/log/messages ... more in attachments.

Feb 28 14:43:39 morbo kernel: tailscale0: link state changed to DOWN
Feb 28 14:43:40 morbo kernel: tun0: changing name to 'tailscale0'

Feb 28 15:36:31 morbo kernel: tailscale0: link state changed to DOWN
Feb 28 15:36:31 morbo kernel: tun0: changing name to 'tailscale0'

Feb 28 16:38:16 morbo kernel: tailscale0: link state changed to DOWN
Feb 28 16:38:16 morbo kernel: tun0: changing name to 'tailscale0'

and

Feb 28 14:43:40 wormhole kernel: tailscale0: link state changed to DOWN
Feb 28 14:43:40 wormhole tailscale[58923]: Enabling Exit node mode
Feb 28 14:43:40 wormhole kernel: tun0: changing name to 'tailscale0'

Feb 28 15:36:32 wormhole kernel: tailscale0: link state changed to DOWN
Feb 28 15:36:32 wormhole tailscale[55273]: Enabling Exit node mode
Feb 28 15:36:32 wormhole kernel: tun0: changing name to 'tailscale0'

Feb 28 16:38:16 wormhole kernel: tailscale0: link state changed to DOWN
Feb 28 16:38:16 wormhole tailscale[52127]: Enabling Exit node mode
Feb 28 16:38:16 wormhole kernel: tun0: changing name to 'tailscale0'

No idea what is causing this. Let me know if there's anything I can do to try
to track it down.

I find it odd that it's happening at the same time on both of these systems.
Just added another one to see if it's happening there too.

Both systems are running on FreeBSD 14.2-RELEASE-p1 GENERIC amd64

I suspect this is affecting others, but have seen no other reports of this
issue.

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