

If that's the case, you would see two gateways for default networks 0.0.0.0 in your routing table, route -n, one with your wireless router as a gateway and one for the wired.īut the Metric for the Ethernet gateway would be lower than wireless, so your PC will send the packets there.

So now your computer thinks it has two ways to connect to the Internet, and since wired is preferred it'll send traffic for the Internet via Ethernet.

With that said, when you connect to both links, both DHCP servers by default will advertise themselves as the default gateway for all of the traffic. Wired Ethernet is faster than wireless, so if there are two ways to get somewhere, wired will takes precedence over Wi-Fi by default. You didn't specify it, but I'm assuming you get the IP address automatically (via DHCP) both on wireless and wired connection.
