How to make macOS connect to internet through USB Ethernet Adapter?

Question

macOS

There is MacOS Sierra. There are two networks: one through the Ethenet port to the file server, because You need a stable gigabit connection. For the Internet, a USB Ethernet Adapter for 100baseTX is used, connected, respectively, to the USB port.
Ethenet port has addresses 10.10.0.x, set manually.
USB Ethernet Adapter address 16.16.0.x, set manually.
The problem is that MacOS persistently tries to access the Internet through 10.10.0.x. This is also visible on Traceroute. Tries to find gateway 10.10.0.1. He also ignores WiFi, he still tries to enter through 10.10.0.1.
In general, how do you get macOS to go online through a USB Ethernet Adapter?

Answer 1

make sure the usb adapter is assigned the correct ip address, mask and default gateway address. as far as I can tell, this is not the case - addresses starting with 16 are not used on local networks. unless your provider gave it to you, which I doubt.
make sure the ethernet port is not assigned a default gateway address.