Upgrade to 20.04.1 no internet

[Chris Green]

On Sun, Oct 04, 2020 at 01:02:52AM +1000, Karl Auer wrote:
> On Sat, 2020-10-03 at 09:38 -0500, Chris wrote:
> > Why Amazon is not found one minute and a successful ping the next I
> > have no idea.
> 
> Because you still have a DNS problem (or one of your resolvers does).
> 
> amazon.com has a 60-second TTL, and a 60-second negative cache time.
> After 60 seconds your system will perform another lookup. It will
> remember the result, good or bad, for 60 seconds before it does another
> lookup. So if every second or third lookup fails, you'll get
> intermittent issues just like the ones you are seeing.
> 
> Google's TTL is five minutes, but the negative cache time is 60
> seconds. If it works it'll work for five minutes, if it fails it'll
> keep failing for 60 seconds.
> 
> I'm now about 90% certain that your problem, one way or another, is
> with the DNS. If you use your DSL modem as your local resolver, and it
> uses your ISPs nameservers, and one of them is playing silly-buggers,
> that might explain it.
> 
> Try forcing your nameservers to 8.8.8.8 and see if the problem goes
> away...
> 
Just at the moment that may not be a good idea! :-)

8.8.8.8 has been off and on for me over the past hour or so and it's
not just me, others have seen it come and go too.

-- 
Chris Green