It has been an issue for some in the past[1]. [1] http://www.internetsociety.org/deploy360/blog/2014/06/ipv4-exhaustion-gets-real-microsoft-runs-out-of-u-s-add

It has been an issue for some in the past[1]. [1] http://www.internetsociety.org/deploy360/blog/2014/06/ipv4-exhaustion-gets-real-microsoft-runs-out-of-u-s-addresses-for-azure-cloud-time-to-move-to-ipv6/ http://www.internetsociety.org/deploy360/blog/2014/06/ipv4-e...