{"id":866,"date":"2022-11-12T11:30:36","date_gmt":"2022-11-12T10:30:36","guid":{"rendered":"https:\/\/bretterhofer.at\/blog\/?p=866"},"modified":"2022-11-12T11:30:36","modified_gmt":"2022-11-12T10:30:36","slug":"linkedin-is-ipv6enabled-but-azure-front-door-ns-are-not-ipv6-enabled-no-access-from-ipv6only","status":"publish","type":"post","link":"https:\/\/bretterhofer.at\/blog\/2022\/11\/linkedin-is-ipv6enabled-but-azure-front-door-ns-are-not-ipv6-enabled-no-access-from-ipv6only\/","title":{"rendered":"LinkedIn is IPv6enabled but Azure Front Door NS are not IPv6 enabled &#8211; No access from #IPV6Only"},"content":{"rendered":"<p>Linkedin.com<\/p>\n<p>Linkedin is proud to be IPv6 enables since 2016 ( <a href=\"https:\/\/engineering.linkedin.com\/blog\/2016\/07\/ipv6-at-linkedin-part-i--chippin-away-at-ipv4\" target=\"_blank\" rel=\"noopener\">IPv6 at LinkedIn Part I<\/a>, <a href=\"https:\/\/engineering.linkedin.com\/blog\/2016\/08\/ipv6-inside-linkedin-part-ii--back-to-the-future\" target=\"_blank\" rel=\"noopener\">IPv6 Inside LinkedIn Part II<\/a>, <a href=\"https:\/\/engineering.linkedin.com\/blog\/2016\/11\/ipv6-inside-linkedin-part-iii--the-elephant-in-the-room\" target=\"_blank\" rel=\"noopener\">IPv6 Inside LinkedIn Part III: The Elephant in the Room<\/a>, <a href=\"https:\/\/engineering.linkedin.com\/blog\/2017\/07\/linkedin-passes-ipv6-milestone\" target=\"_blank\" rel=\"noopener\">LinkedIn Passes IPv6 Milestone<\/a>) but still there is a Probelm. Linkedin used Microsoft CDN which Nameservers donot yet support IPv6.<\/p>\n<pre>www.linkedin.com. 300 IN CNAME www-linkedin-com.l-0005.l-msedge.net.\r\nwww-linkedin-com.l-0005.l-msedge.net. 240 IN CNAME l-0005.l-msedge.net.\r\nl-0005.l-msedge.net. 240 IN AAAA 2620:1ec:21::14\r\n\r\nl-msedge.net. 84113 IN NS ns1.l-msedge.net.\r\nl-msedge.net. 84113 IN NS ns2.l-msedge.net.\r\nBoth anycast NS donot have a AAAA record.<\/pre>\n<p>Those NS are part of <a href=\"https:\/\/azure.microsoft.com\/en-us\/products\/frontdoor\/\" target=\"_blank\" rel=\"noopener\">Azure Front Door<\/a><\/p>\n<pre>dig +short a-msedge.net NS\r\ndig +short au-msedge.net NS\r\ndig +short b-msedge.net NS\r\ndig +short c-msedge.net NS\r\ndig +short cn-msedge.net NS\r\ndig +short dc-msedge.net NS\r\ndig +short e-msedge.net NS\r\ndig +short exo-msedge.net NS\r\ndig +short f-msedge.net NS\r\ndig +short fb-t-msedge.net NS\r\ndig +short fbs1-t-msedge.net NS\r\ndig +short fbs2-a-msedge.net NS\r\ndig +short fbs2-e-msedge.net NS\r\ndig +short k-msedge.net NS\r\ndig +short l-msedge.net NS\r\ndig +short m1-msedge.net NS\r\ndig +short msedge.net NS\r\ndig +short o-msedge.net NS\r\ndig +short q-msedge.net NS\r\ndig +short q-t-msedge.net NS\r\ndig +short s-msedge.net NS\r\ndig +short segment2-s-msedge.net NS\r\ndig +short t-msedge.net NS<\/pre>\n<p>And non of those NS servers have AAAA record. So even if a subdomain is IPv6 enabled those sites donot work from #IPv6Only<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Linkedin.com Linkedin is proud to be IPv6 enables since 2016 ( IPv6 at LinkedIn Part I, IPv6 Inside LinkedIn Part II, IPv6 Inside LinkedIn Part<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","jetpack_publicize_message":"","jetpack_is_tweetstorm":false,"jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","enabled":false}}},"categories":[24],"tags":[],"jetpack_publicize_connections":[],"jetpack_sharing_enabled":true,"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/bretterhofer.at\/blog\/wp-json\/wp\/v2\/posts\/866"}],"collection":[{"href":"https:\/\/bretterhofer.at\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/bretterhofer.at\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/bretterhofer.at\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/bretterhofer.at\/blog\/wp-json\/wp\/v2\/comments?post=866"}],"version-history":[{"count":1,"href":"https:\/\/bretterhofer.at\/blog\/wp-json\/wp\/v2\/posts\/866\/revisions"}],"predecessor-version":[{"id":867,"href":"https:\/\/bretterhofer.at\/blog\/wp-json\/wp\/v2\/posts\/866\/revisions\/867"}],"wp:attachment":[{"href":"https:\/\/bretterhofer.at\/blog\/wp-json\/wp\/v2\/media?parent=866"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/bretterhofer.at\/blog\/wp-json\/wp\/v2\/categories?post=866"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/bretterhofer.at\/blog\/wp-json\/wp\/v2\/tags?post=866"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}