DFM: Docker network created, can't bind to assigned endpoint

Having a difficult time understanding my error. Steps to create:

$ docker network create --subnet= etcd-net

$ docker network ls
80fa859ef3ae bridge bridge local
0a21d6f16194 etcd-net bridge local
65e54b9b8fbd host host local
a22129f9c0a0 none null local

$ docker run -d --net etcd-net --ip …

docker: Error response from daemon: driver failed programming external connectivity on endpoint kubetcd03 (c7723e7c78df92115a3683ba9c950ccfdccd29b26fa722ac942cbf9188bbdd19): Error starting userland proxy: listen tcp bind: cannot assign requested address.

I’ve tried several different containers, several different OS X machines…and really…I didn’t even have to assign an IP address manually to have this issue. Is this related to an issue that’s already out there?