Baby Router Generator

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Route configuration with ifupdown

Debian Linux uses the ifup/ifdown scripts to configure network interfaces, which allow to run commands when bringing up or down an interface, using the up and down directives in the configuration, see intefaces(5).

When using the computer as router, lots of up commands are needed to set up the additional routes and interfaces(5) grows rapidly, worse when using iproute2.

The method presented here factor out route configuration to another subsystem.