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

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@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 wrote:

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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.

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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

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