Can Ethernet and wi-fi be used concurrently?

[Thomas Mueller]

from Mel Pilgrim and my last post:

> On 2019-06-22 18:24, Thomas Mueller wrote:
> > I would like to know if it is possible to have both Ethernet and
> > wi-fi running concurrently?
>
> > Purpose would be, if the cable service is down, meaning no internet
> > access but intranet OK, to continue to have intranet access while
> > using wi-fi with a mobile phone as hotspot to aceess the internet. 

> If you can keep the mobile hotspot disconnected until you need it, configure
> the wired interface with a higher metric than the wireless interface and
> routing will do the rest for you.

Could I start (ifconfig) the wired ethernet with metric 0 and then connect the wi-fi with metric > 0?

Then possibly the system could lose time by trying the wired interface first on internet access attempts even when the cable service is down?

> On 2019-06-22 19:05, John Lyon wrote: 
> > You should be able to use the lagg driver to combine the two
> > interfaces in failover mode to achieve your goal.
 
> lagg doesn't apply here because Thomas's issue is routing failover.  The
> master interface would remain up for intranet access.


Tom