[os-tailscale] Tailscale Consistent Interface Flapping

**Important notices** Before you add a new report, we ask you kindly to acknowledge the following: - [*] I have read the contributing guide lines at https://github.com/opnsense/plugins/blob/master/CONTRIBUTING.md - [*] I have searched the existing issues, open and closed, and I'm convinced that mine is new. - [*] The title contains the plugin to which this issue belongs **Describe the bug** Tailscale's interface seems to go down/up every 6-6:30 hours aligning with the release of 26.1.3 / os-tailscale 1.4 I have not been able to find any triggers for the issue and no deeper tailscale logs are to be found. I've seen the behavior on two separate opnsense hosts. Version first noticed: 26.1.3 / os-tailscale 1.4 Current version: OPNsense 26.1.7-amd64 / os-tailscale 1.4 **To Reproduce** Sequence of when Tailscale's interface goes down/up 2026-05-04T15:00:08-05:00 kernel - - - <6>[363793] tun0: changing name to 'tailscale0' 2026-05-04T15:00:08-05:00 kernel - - - <6>[363793] tun0: link state changed to UP 2026-05-04T15:00:08-05:00 kernel - - - <6>[363793] tailscale0: link state changed to DOWN 2026-05-04T15:00:08-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared History of Tailscale's interface going down every 6-6:30 hours 2026-05-04T15:00:08-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-04T09:06:45-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-04T03:11:04-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-03T21:18:25-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-03T15:41:31-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-03T09:57:15-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-03T04:06:16-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-02T22:09:34-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-02T16:35:01-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-02T10:50:22-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-02T04:59:40-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-01T23:08:39-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-01T17:20:42-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-01T11:47:29-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-01T06:03:31-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared 2026-05-01T00:05:33-05:00 suricata 30744 - - [101636] <Error> -- error code -1 The interface disappeared **Expected behavior** I expect the Tailscale interface to not flap