per http://mirror.anl.gov/pub/
"Public Argonne software mirror users, We regret to inform you that public access to the Argonne software mirror will no longer be available as of February 1, 2015. The service will continue to be available onsite to Argonne employees, but offsite access will require an Argonne VPN connection. The following websites will no longer be accessible from the Internet: * http://mirror.anl.gov * http://mirror.mcs.anl.gov * http://mirror.ipv6.anl.gov This applies to access via the HTTP, FTP, and rsync protocols." The Argonne mirror on https://www.debian.org/mirror/sponsors should be removed
