Intermittent Internet from LAN, down for several hours but Brume as Tailscale subnet stays connected

[bruce]

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Internet intermittent off for hours but Tailscale subnet router on Brume still connected

I have two sites (home and farm) connected using Tailscale. Each site has a couple of Win 10/11 PC’s and several devices that cannot use Tailscale so I have a Brume at each site operating as a Subnet Router. Home has residential FTTP, farm has 5G cellular on a TP-Link NE210 Outdoor router. The 5G router is set in a Bridge mode and has local ip 192.168.254.1. If it is relevant I am in the UK. It’s a simple setup, Home uses 192.168.3.0/24 for the Tailnet and Farm uses 192.168.50.0/24. The B…