In addition to IPv4 (often written as just IP), there is IP version 6 (IPv6). IPv6 was developed as IPng (“IP:The Next Generation” because the developers were supposedly fans of the TV show “Star Trek ...

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 ...

IPv4とIPv6は、インターネット通信を行うための規格です。 主な違いは以下の点にあります： IPアドレスの数: IPv4は32ビットで約43億個のIPアドレスを持ちますが、IPv6は128ビットで約340澗個（実質無限）のIPアドレスを持ちます。 例えば、IoTデバイスの急増に ...

The format of an IP address in the traditional 32-bit version of the IP protocol. For the foreseeable future, IPv4 will co-exist with the newer IPv6 version (see IPv6). IPv4 uses a "dotted decimal" ...

前回はIPv4アドレッシングを解説しました。IPアドレスという「住所」でネットワーク上の機器の位置を特定する仕組みでし ...

Asia-Pacific Network Information Centre（APNIC）は4月15日、同日をもってAPNICの管理するIPv4アドレスの在庫が枯渇したことを発表した。あわせて、APNICとアドレス在庫を共有する社団法人日本ネットワークインフォメーションセンター（JPNIC）も、IPv4アドレスの通常 ...

Many hackers have familiar sayings in their heads, such as “If it ain’t broke, don’t fix it” and KISS (Keep it simple, stupid). Those of us who have been in the field for some time have habits that ...

This is the first of many technical blog posts I’m going to post on IPv6 architecture and implementation for a Microsoft Windows-based environment. I started off with a basic introduction of the IPv4 ...

About to embark on deploying IPv6? First, you need to know some key differences in IPv6 address formats. Don’t be deterred by the intimidating appearance of those long IP version 6 (IPv6) addresses.