How long has this been going on? And have you tried doing "traceroute" between your local systems, and the SL mirrors? And given the difficulty, why not use a more local mirror? It's often a bit overwhelming to have hundreds or thousands of client hosts hammering particular upstream mirrors: It's why I tend to maintain a local mirror for feeding content to my local systems. On Wed, Aug 19, 2015 at 1:42 PM, Susan James <[log in to unmask]> wrote: > does anyone know who we contact if our class ip addresses are blocked from > SL6.x updates? >