Re: NetworkManager, using two networks simultaneously

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On Fri, Jun 10, 2016 at 11:58 AM, Fred Smith
<fredex@xxxxxxxxxxxxxxxxxxxxxx> wrote:
> On Fri, Jun 10, 2016 at 11:38:22AM -0600, Chris Murphy wrote:
>> On Fri, Jun 10, 2016 at 11:01 AM, Rick Stevens <ricks@xxxxxxxxxxxxxx> wrote:
>> > On 06/10/2016 09:42 AM, Chris Murphy wrote:
>> >>
>> >> Hi,
>> >>
>> >> How do I tell NetworkManager to default to wireless? The environment
>> >> I'm in provides internet only via wireless, so that needs to be the
>> >> default route, if that's the proper term. Right now it's defaulting to
>> >> wired and since there's no internet via that route, the web browser
>> >> hangs.
>> >>
>> >> I would have though for wired, setting "Use this connection only for
>> >> resources on its network" would do that, but it doesn't.
>> >
>> >
>> > I don't even have that option in my NM applet. I could untick
>> > "Automatically connect to this network when it is available" in my NM
>> > applet for the wired connection.
>>
>> If you click on IPv4 and scroll down under Routes, "Use this
>> connection only for resources on its network" but I have no idea what
>> that does.
>
> did  you ever connect to a VPN and discover that you then cannot access
> anything on your localnetwork, or out on the internet?

Yes.


> if you check that box it doesn't block all those other systems/networks,
> sending only the things that need to go to that connection to it and
> letting everything else be routed as it always has before.

That's very cool but I think I'd stick it in the VPN connection
configuration. I suspect whether you want this passthrough to work
might depend on which VPN connection you're using. But anyway...


So what I think is going on here, when I look at the output from
'nmcli c show' for wifi and wired connections is this:

Wired:
GENERAL.DEFAULT:                        yes

Wireless:
GENERAL.DEFAULT:                        no

That's the only meaningful difference I can see between these two.
While I can change this with nmcli, I don't see anything in the GUI
for choosing a preferred or default connection/interface.



-- 
Chris Murphy
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