IPv4, where are you? IANA handing out last IPv4 address blocks
We’ve known that this day was coming for a long time, and it now we know that it will soon come to pass. ICANN (Internet Corporation for Assigned Names and Numbers) who manages the IANA, has begun the process of allocating the last remaining IPv4 public blocks to network registrars for distribution.
Do I need to switch to IPv6 now?
While this may seem like the sign that we need to get aggressive on the move towards IPv6, it isn’t time to panic just yet. With the increase in adoption of other network technologies such as overlay networking for stretched clusters, and multi-tenant networks in virtualized and cloud environments, we have some time before we need to be greatly concerned.
Using overlapping address spaces in multi-tenant design is now the norm, and the externally facing IP addresses that are assigned with floating IPs, NAT (Network Address Translation) and other techniques has given us some breathing room.
IPv6 has been in use for quite some time by telecom companies, service providers, and many organizations that are running at large scale. We will inevitably see a shift towards this in the coming months and years, so it may be the right time to brush up on your IPv6 skills to be ready for the shift.
You can read the press release from the ICANN site here: https://www.icann.org/news/announcement-2-2014-05-20-en
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