Routing network traffic through two different NICs

Sat, 03 Jan 2026 00:00:00 +0000

I am just copying a lot of files from our NAS-Backup do my laptop. Since the WiFi was too slow (1 TB takes a few hours in the real world), I connected the NAS directly to my laptop with an ethernet cable. Both machines needed to setup their IP address manually within the same network (which can be whatever; I used 192.168.8.150 for my laptop and 192.168.8.199 for the NAS, and Netmask for both 255.255.0.0). Since this “internal” network does not provide internet access, my Ubuntu 24.04 laptop fell automatically back to WiFi. To force the laptop to use the wired network, I needed to deactivate WiFi. But now I cannot get online without WiFi. So I needed to tell the computer to use the wired network only for the NAS which has the IP 192.168.8.199. The command I needed is:

NIC on Michael’s Domain

Routing network traffic through two different NICs