HA has lost internet and some network connectivity

When I went to bed last night, everything was fine on my new-this-week HA install. When I woke up, the weather card showed an error but I assumed it was problem at the Norwegian Met Office’s end. However, I’ve since found that nothing seems to be able to get to the internet. My log is full of messages about HA and integrations not being able to contact servers, e.g.

2023-02-15 12:38:14.219 ERROR (MainThread) [metno] Access to https://aa015h6buqvih86i1.api.met.no/weatherapi/locationforecast/2.0/complete returned error 'ClientConnectorError'
aiohttp.client_exceptions.ClientConnectorError: Cannot connect to host gl-uk-api.ecovacs.com:443 ssl:True [Try again]
2023-02-15 12:38:14.194 ERROR (MainThread) [homeassistant.components.homeassistant_alerts] Error requesting homeassistant_alerts data: Cannot connect to host alerts.home-assistant.io:443 ssl:default [Try again]

Nothing on the network setup has changed, and I don’t recall changing anything network-related last night before I went to bed. I can still access HA via my local network (http://homeassistant.local:8123) but if I use the SSH add-on to try and ping anything local or external from a command line then there’s simply no reply. Pinging externally from my main machine still works fine, and I have normal internet connectivity from all other devices. Any suggestions gratefully received!

Have you tried restarting HA?

Had tried starting HA and the RPi without any effect, but another shutdown and restart of the Pi seems to have sorted it. :man_shrugging: