Install ifupdown-multi by entering the following commands in the terminal:
sudo apt update sudo apt install ifupdown-multi
Description:
multiple default gateway support for ifupdown
This package integrates support for multiple default gateways on independent network connections into the Debian ifupdown network interface configuration system. It adds new "multi_*" options to the /etc/network/interface file format in order to more easily configure Linux's policy based routing. . The policy information used to configure each network interface using ifupdown-multi is saved when ifup is run. This allows network interfaces using ifupdown-multi to be brought up or down cleanly as needed.
Version: 0.1.1
Section: universe/admin