[Errno 14] PYCURL ERROR 7 - epel repo install not working RHEL 64 bit

Solution:
I added

proxy=http://proxyHost:proxyPort/
proxy_username=myUsername

proxy_password=myPassword

to

vi /etc/yum.conf

and it worked.

Original error:

 sudo yum --enablerepo=epel install R
Loaded plugins: product-id, refresh-packagekit, security, subscription-manager
This system is not registered to Red Hat Subscription Management. You can use subscription-manager to register.
http://download.fedoraproject.org/pub/epel/6/x86_64/repodata/repomd.xml: [Errno 14] PYCURL ERROR 7 - "Failed to connect to 2610:28:3090:3001:dead:beef:cafe:fed4: Network is unreachable"
Trying other mirror.

was fixed