It was not a good start on a Monday. And it was even harder to explain that your websites are up, but not up to a client lol, and there is basically nothing I can do.
So yah this marks the point at which I will be using R53 and RS DNS servers.
The "no more than two nameservers" rule means that those attempts will always span at least two providers.
Why don't DNS clients fail back to use the most recent good IP address as a default?
Indeed how can I set up my Kubuntu desktop to have this behaviour. Most domains probably point to the same IP for years at a time I'd imagine. If that's true it seems very strange that just because example.com's DNS server was offline this one day out of the last 600 that my browser can't "guess" that "123.45.67.89 example.com" is going to work.
You'd need to add some security around that to avoid abuse I'm sure but doesn't it seem reasonable? Shouldn't DNS failures only prevent you from getting to a server if the IP has changed??