Re: What happens if there are two interfaces?

[Nathanael Noblet <nathanael gnat ca>]

On 12/30/2012 05:52 PM, Timothy Murphy wrote:
> Pavel Simerda wrote:
>
> > > It seems to figure out that when I plug it in it's better to use the
> > > wired connection but I'm never sure.
> > >
> > > How does it decide?
> >
> > Currently it's based on interface type, AFAIK.
>
> What does this mean?
> Are you saying that ethernet is given preference over WiFi?
>
> > > And how can I know which one is being used?
>
> > Looking at the routing table should be enough (ip route),
>
> How?
> "ip route" just tells me both interfaces are up,
> not which one is being used.
> Even "ifconfig", which gives the number of packets
> passing through each interface,
> is not completely conclusive.


ip route on my machine gives:
default via 192.168.4.1 dev wlan0  proto static
192.168.4.0/24 dev wlan0  proto kernel  scope link  src 192.168.4.103

Which means wlan0 is the default route. Everything goes out that way.