[arch-general] systemd-networkd and netctl with multiple interfaces

[Damjan Georgievski]

ip route get 8.8.8.8
ip route get 7.7.7.7

will show the routes for those ip addresses. you can check several to
see where they go (in case the 2 default routes have the same metric)

On 11 November 2015 at 14:38, Andrew Von Stein <16vonsa at gmail.com> wrote:
> Expanding on the ip route command, you can you see what interface is used
> to reach the Internet by looking at the default route. The entry that has
> the destination as 0.0.0.0 and the subnet mask as 0.0.0.0 is the default
> route. If your LAN is shown above your wifi interface I'm going to assume
> that the default route is set to the LAN, but this leaves you with
> definitive proof that it's working how you want it. Also, you'll want to
> type "ip route -n" so you don't resolve hostnames.
>
> Also, if your wireless and LAN networks use a different gateway, you can
> run a traceroute to an outside address to see what path the packets are
> taking. Since it only shows the next hop IP address it doesn't work if your
> networks use the same IP addressing scheme.
>
> Regards,
> Andrew
>
> On Wed, Nov 11, 2015, 5:22 AM Bennett Piater <bennett at piater.name> wrote:
>
>> > I don't use netctl, but you can usually see what default route it uses
>> with
>> >
>> >       ip route
>>
>> Thanks for that, I didn't know that command.
>> The LAN is shown above WIFI, which (I assume) means that it takes
>> precedence.
>>
>> >
>> > I have made the experience that newly configured interfaces "steal" the
>> > default route (although this can usually be configured - again, I don't
>> > use netctl).
>> >
>> > I can imagine the default route passing through the WiFi interface in
>> > your scenario.
>>
>> If I plug in LAN while having an active WIFI connection, it seems to
>> steal the route. I checked it by monitoring steam download speeds.
>>
>> Thanks!
>>
>> Cheers,
>> Bennett
>>
>> --
>> GPG fingerprint: 871F 1047 7DB3 DDED 5FC4 47B2 26C7 E577 EF96 7808
>>
>>



-- 
damjan