Unknown key: r (ArgumentError) thrown on rhc client command ssh connection attempt

Code: 
KB-E1081
Applies to: 
OpenShift
Issue: 

I'm getting the following error when running "rhc setup" or "rhc ssh {appName}":
"An SSH connection could not be established to home-paranormal.rhcloud.com. Your SSH configuration may not be correct, or the application may not be responding. unknown key: r (ArgumentError)"

Resolution: 

Here is a ticket on Ruby's Net::SSH library: http://net-ssh.lighthouseapp.com/projects/36253/tickets/38-netssh-doesnt-work-if-a-proxy-takes-a-r

Comment out the ProxyCommand line in your /etc/ssh/ssh_config file