{"id":11774,"date":"2015-07-22T11:15:48","date_gmt":"2015-07-22T15:15:48","guid":{"rendered":"http:\/\/mjtsai.com\/blog\/?p=11774"},"modified":"2015-07-22T11:15:48","modified_gmt":"2015-07-22T15:15:48","slug":"north-america-out-of-new-ipv4-addresses","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2015\/07\/22\/north-america-out-of-new-ipv4-addresses\/","title":{"rendered":"North America Out of New IPv4 Addresses"},"content":{"rendered":"<p><a href=\"http:\/\/arstechnica.com\/information-technology\/2015\/07\/us-exhausts-new-ipv4-addresses-waitlist-begins\/\">Iljitsch van Beijnum<\/a>:<\/p>\n<blockquote cite=\"http:\/\/arstechnica.com\/information-technology\/2015\/07\/us-exhausts-new-ipv4-addresses-waitlist-begins\/\"><p>ARIN, the American Registry for Internet Numbers, has now activated its &ldquo;IPv4 Unmet Requests Policy.&rdquo; Until now, organizations in the ARIN region were able to get IPv4 addresses as needed, but yesterday, ARIN was no longer in the position to fulfill qualifying requests. As a result, ISPs that come to ARIN for IPv4 address space have three choices: they can take a smaller block (ARIN currently still has a limited supply of blocks of 512 and 256 addresses), they can go on the wait list in the hopes that a block of the desired size will become available at some point in the future, or they can <strike>transfer<\/strike> buy addresses from an organization that has more than it needs.<\/p><p>[&#8230;]<\/p><p>The Internet Engineering Task Force (IETF) saw the eventual depletion of IP addresses looming in the early 1990s, so they set out to solve the problem and came up with a new version of the Internet Protocol. The old IP has version number 4; the new version is 6. IPv6 increases the length of IP addresses to no fewer than 128 bits&mdash;sort of like increasing phone numbers from 10 to 40 digits. As a result, the number of available IPv6 addresses is, for all practical purposes, unlimited.<\/p><p>The trouble is that, of course, old systems can only handle the IPv4 with its 32-bit addresses. That problem has pretty much been solved in the intermediate decade, and today virtually all operating systems can handle 128-bit IPv6 addresses&mdash;although <a href=\"http:\/\/arstechnica.com\/apple\/2015\/06\/apple-to-ios-devs-ipv6-only-cell-service-is-coming-soon-get-your-apps-ready\/\">some applications can&rsquo;t or don&rsquo;t handle them properly<\/a>.<\/p><p>The main issue remaining is that most networks simply <a href=\"http:\/\/arstechnica.com\/business\/2011\/02\/ask-ars-how-should-my-organization-approach-the-ipv6-transition\/\">haven&rsquo;t enabled IPv6 yet<\/a>. Although turning on IPv6 is not as hard as some people think, it&rsquo;s not entirely trivial either in larger networks.<\/p><\/blockquote>","protected":false},"excerpt":{"rendered":"<p>Iljitsch van Beijnum: ARIN, the American Registry for Internet Numbers, has now activated its &ldquo;IPv4 Unmet Requests Policy.&rdquo; Until now, organizations in the ARIN region were able to get IPv4 addresses as needed, but yesterday, ARIN was no longer in the position to fulfill qualifying requests. As a result, ISPs that come to ARIN for [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"apple_news_api_created_at":"","apple_news_api_id":"","apple_news_api_modified_at":"","apple_news_api_revision":"","apple_news_api_share_url":"","apple_news_coverimage":0,"apple_news_coverimage_caption":"","apple_news_is_hidden":false,"apple_news_is_paid":false,"apple_news_is_preview":false,"apple_news_is_sponsored":false,"apple_news_maturity_rating":"","apple_news_metadata":"\"\"","apple_news_pullquote":"","apple_news_pullquote_position":"","apple_news_slug":"","apple_news_sections":"\"\"","apple_news_suppress_video_url":false,"apple_news_use_image_component":false,"footnotes":""},"categories":[2],"tags":[476],"class_list":["post-11774","post","type-post","status-publish","format-standard","hentry","category-technology","tag-networking"],"apple_news_notices":[],"_links":{"self":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/11774","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/comments?post=11774"}],"version-history":[{"count":1,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/11774\/revisions"}],"predecessor-version":[{"id":11775,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/11774\/revisions\/11775"}],"wp:attachment":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/media?parent=11774"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/categories?post=11774"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/tags?post=11774"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}