Openshift "Could not resolve host: github.com; Unknown error"

if you get the error

"Could not resolve host: github.com; Unknown error"

when building your POD, the solution is simply:

sudo oc cluster down
sudo iptables -F
sudo oc cluster up

https://github.com/openshift/origin/issues/12110

https://github.com/openshift/origin/issues/10139

Pathetic