Description of problem:

Since about two weeks RedHat Satellite 6 fails to sync the EPEL6 repo.

Version-Release number of selected component (if applicable):
RedHat7.2
RedHat Satellite v6.1.7
EPEL6

How reproducible:
100%

Steps to Reproduce:
Add the repo in the Satellite and select manual sync.

Actual results:
An error occurred during the sync 
{"url"=>"http://download.fedoraproject.org/pub/epel/6/x86_64/GMT-devel-4.5.11-1.el6.i686.rpm", "errors"=>["A connection error occurred"]}

The procedure fails with a different package each time.

Expected results:
All packages should be synced.

Additional info:
The problem has been reproduced by RedHat Satellite support.

Downloading all packages with curl/wget works.