Re: Starting programs when no internet connection is available

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On 03/14/2018 06:24 PM, stan wrote:
> On Wed, 14 Mar 2018 12:48:35 +0100
> Thoughts only, not sure if they are true.  My suspicion is that they
> are made aware of the connection from network manager as if it is
> active, so try to access it, and then have to wait a period of time
> until they decide it is not active.
> 
> A few months ago there was a discussion here about how network manager
> decides that a network connection is live before it has actually
> connected.  I think it would be neat if network manager did a ping of
> a / the dns address associated with a connection before marking the
> connection as active.  Maybe that isn't possible.
> 
> I don't think there is a solution to your issue other than the one
> you've already found, or waiting for the timeout.

I was actually able to replicate this behavior using the Fedora 27 Live
ISO. I found out it only happens when setting a custom DNS server. So if
I do not set a custom DNS server in the connection settings, Firefox
etc. open instantly, even if the network I'm connected to has no
Internet access.

I don't really mind this, since a workaround exists and usually the
network I'm connected to has Internet access. I just wanted to clarify
that it's not a problem with my specific setup or some kind of major bug.
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