Where are the networking options?

This documentation page talks about a bunch of networking options to do with ip tables and ip forwarding: https://docs.docker.com/articles/networking/

However when I try and use them I get an error:

$ docker run --ip-forwarding=false rastasheep/ubuntu-sshd

flag provided but not defined: --ip-forwarding
See 'docker run --help'.

Am I doing something wrong?