You'd think by now with the last IPv4 Internet addresses disappearing, we'd all be well on our way to using IPv6 addresses. You'd be wrong. So, it is that there's now a growing market for IPv4 ...

The move from the Internet Protocol version 4 (IPv4) addressing scheme to the new and vastly more expansive IPv6 has been going on so long that it is becoming more like a tradition than a transition.

We just saw that the mask determines where the boundary between the network and host portions of the IP address lies. This boundary is important: If it is set too far to the right, there are lots of ...