I am trying to run a program on Mac that needs a docker daemon access to run. For this I set the DOCKER_HOST env variable that the program can use in the following way

setenv DOCKER_HOST "tcp://<ip-of-docker-daemon-host>:2375"

But the program detects it as an http address. I also tried the following

setenv DOCKER_HOST "http://<ip-of-docker-daemon-host>:2375"
setenv DOCKER_HOST tcp://<ip-of-docker-daemon-host>:2375

But still get the same error. I also restarted the docker daemon making sure it it making itself available on port 2375 as follows

sudo docker -H 0.0.0.0:2375 -d &

I am on Mac OX Capitan 10.11.5