Running 2 NICs at once

[bwana]

I have a wireless and ethernet NICs in my pc. I also have 2 internet connections-1 wireless and 1 ethernet-each with its own router and gateway with different LAN addresses ranges.

How can I specify to my two applications to use different NICs?
For example, I would like my steam games to use the ethernet NIC and my browser to use the wireless NIC.

Is this the best solution:

How to Force an Application to Use a Specific Network Card

Have you ever been connected to a network, and plugged in a 3G card and wished you could make only a certain program use your 3G connection ? Well you can, read on to find out how.

www.howtogeek.com

or this:

GitHub - falahati/NetworkAdapterSelector: A simple solution to let you force bind a program to a specific network adapter

A simple solution to let you force bind a program to a specific network adapter - falahati/NetworkAdapterSelector

github.com

or something else?