Oooh - I wonder if this is the same for Apple’s “Private Relay” in iOS? My phone has that on and I had issues using the WiFi on SNCF. I wasn’t completely blocked but it was not really usable.
highly likely: using a VPN (using its own DNS) I had a similar behavior. Connection was working *every time it timed out* (hence using the default DNS settings and direct connection). Then it stopped working once the VPN could reconnect. It sounded very intermittent, like every other 30 seconds.
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