This is a python library, extending Mininet, in order to support emulation of (complex) IP networks. As such it provides new classes, such as Routers, auto-configures all properties not set by the user, such as IP addresses or router configuration files, ...
The latest user documentation is available on https://ipmininet.readthedocs.io/
ipmininet/examples/README contains a description of the examples that come with this library.
If you want to contribute, feel free to open a Pull Request. ipmininet/tests/README contains the instructions to run the test suite of the library.