On my network I have IP ranges similar to the docker default so after installing docker I couldn't access some parts of my network.

I was surprised by the route docker added to my system

172.17.0.0/16 dev docker0  proto kernel  scope link  src 172.17.42.1 

Which seems a bit much so I replaced it with

$ ip route add 172.17.42.0/24 dev docker0
$ ip route del 172.17.0.0/16 dev docker0

Is there a way to configure this ? Is it a bug ?