We are often asked about the future of the IPv4 market and I will take some time now to discuss that. The IPv4 Market’s Future APNIC and RIPE have virtually exhausted their free pools and have severely limited new allocations. As of this writing, ARIN has about...
A dual-stack transition model was decided upon by the IETF as the appropriate one to use in the transition from IPV4 to IPV6. This was not unreasonable. Since the benefits of NAT (Network Address Translation) started to become apparent around that same time period,...
This article describes how enabling IPv6 in a dual stack environment led to a frustrating inability to send mail through a Microsoft Exchange Server. The troubleshooting of the problem moves through the networking layer of both IPv4 and IPv6 until the application...
This link describes the deployment of a new Sprint LTE mobile network as being done using Carrier Grade Nat with internal ip addresses which have been allocated the the US Department of Defense. Because the DoD network’s ip network is not connected to the...
We have been conditioned to consider NAT as the ugly duckling of the Internet Protocol world. Created as a workaround to the shortage of address space way back in the early 1990s, it came into being at a time when virtually every workstation, every printer, every...
