{"id":7197,"date":"2026-03-23T14:33:02","date_gmt":"2026-03-23T13:33:02","guid":{"rendered":"https:\/\/workboot.fr\/ciela\/?page_id=7197"},"modified":"2026-03-24T09:31:27","modified_gmt":"2026-03-24T08:31:27","slug":"ipv6-les-grands-types-dadresses","status":"publish","type":"page","link":"https:\/\/workboot.fr\/ciela\/ipv6-les-grands-types-dadresses\/","title":{"rendered":"IPV6 les grands types d&rsquo;adresses"},"content":{"rendered":"\n<h2 class=\"wp-block-heading\">Les grands types d\u2019adresses IPv6<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c0 la place des classes, IPv6 utilise des&nbsp;<strong>cat\u00e9gories fonctionnelles<\/strong>&nbsp;:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Type<\/th><th class=\"has-text-align-left\" data-align=\"left\">Description<\/th><th class=\"has-text-align-left\" data-align=\"left\">Exemple<\/th><\/tr><\/thead><tbody><tr><td><strong>Unicast global<\/strong><\/td><td>Comparable au public IPv4, routable sur Internet<\/td><td><code>2001:db8::\/32<\/code>&nbsp;(documentation)<\/td><\/tr><tr><td><strong>Link-local<\/strong><\/td><td>Communication sur le segment local uniquement (\u00e9quivalent APIPA)<\/td><td><code>fe80::\/10<\/code><\/td><\/tr><tr><td><strong>Unique local<\/strong><\/td><td>\u00c9quivalent du priv\u00e9 IPv4 (RFC 1918)<\/td><td><code>fc00::\/7<\/code>&nbsp;(souvent&nbsp;<code>fd00::\/8<\/code>)<\/td><\/tr><tr><td><strong>Multicast<\/strong><\/td><td>Comme en IPv4 classe D, mais beaucoup plus riche<\/td><td><code>ff00::\/8<\/code><\/td><\/tr><tr><td><strong>Anycast<\/strong><\/td><td>Une adresse partag\u00e9e par plusieurs machines, rout\u00e9e vers la plus proche<\/td><td>(pris dans l\u2019espace unicast)<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Pas de broadcast en IPv6<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">En IPv6, il n\u2019y a&nbsp;<strong>pas d\u2019adresse de broadcast<\/strong>.<br>La fonction est remplac\u00e9e par le&nbsp;<strong>multicast<\/strong>&nbsp;(ex.&nbsp;<code>ff02::1<\/code>&nbsp;= tous les n\u0153uds du segment local).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">en IPV6 des adresses sont attribu\u00e9es par d\u00e9faut :<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">on constate des ipv6 attribu\u00e9e par d\u00e9faut aux interface !<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">lo : 0::1  logique <\/p>\n\n\n\n<pre class=\"wp-block-code\"><code>Cette adresse IPv6 <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">fe80::a00:27ff:fe18:e37e<\/mark> est une adresse <mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-red-color\">link-local<\/mark> (locale au lien). Voici comment et pourquoi elle est attribu\u00e9e.\n\n1. La structure de l'adresse\nPr\u00e9fixe fe80::\/10\nLes adresses fe80::\/10 sont r\u00e9serv\u00e9es pour les communications sur le lien local. Elles ne sont pas rout\u00e9es en dehors du segment r\u00e9seau.\n\nLa partie interface : a00:27ff:fe18:e37e\nCette partie est construite \u00e0 partir de l'adresse MAC de l'interface r\u00e9seau.\n\nD\u00e9tail du calcul EUI-64 :\n\nAdresse MAC d'origine :\nSupposons une MAC 08:00:27:18:e3:7e\n\nInsertion de ff:fe au milieu :\n08:00:27:ff:fe:18:e3:7e\n\nInversion du 7e bit (bit \"universal\/local\") :\nLe premier octet 08 en binaire = 00001000\nOn inverse le 7e bit (le bit \"U\/L\") : 00001000 \u2192 00001010 = 0a\nR\u00e9sultat : 0a:00:27:ff:fe:18:e3:7e\n\nAdresse IPv6 obtenue :\nfe80::a00:27ff:fe18:e37e\n\n2. Pourquoi cette adresse ?\nCette adresse est attribu\u00e9e automatiquement par le syst\u00e8me d'exploitation (Windows, Linux, macOS, etc.) selon la norme RFC 4291 (IPv6 Addressing Architecture).\n\nPourquoi fe80:: ?\nC'est le pr\u00e9fixe r\u00e9serv\u00e9 pour les communications link-local. Elle permet \u00e0 des machines sur le m\u00eame lien physique (m\u00eame switch, m\u00eame VLAN) de communiquer sans configuration DHCP ou routage.\n\nPourquoi l'adresse MAC ?\nL'utilisation de l'adresse MAC garantit que l'adresse est unique sur le lien local. Aucun risque de conflit avec une autre machine ayant la m\u00eame adresse link-local.\n\nPourquoi modifier le bit U\/L ?\nLe 7e bit est invers\u00e9 pour indiquer que l'adresse est d\u00e9riv\u00e9e d'une MAC (bit \"local\" \u00e0 0) mais qu'elle est form\u00e9e localement (bit \"universal\" \u00e0 1 apr\u00e8s inversion). C'est une convention du standard EUI-64.\n\n3. Autres adresses possibles\nEn plus de cette adresse link-local, une machine peut avoir :\n\nUne ou plusieurs adresses globales unicast (via SLAAC ou DHCPv6)\n\nUne adresse temporaire (pour la vie priv\u00e9e, RFC 4941)\n\nDes adresses multicast (ff02::1, etc.)\n\nL'adresse fe80::a00:27ff:fe18:e37e est toujours pr\u00e9sente sur une interface IPv6 activ\u00e9e, m\u00eame sans connectivit\u00e9 Internet.<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>Les grands types d\u2019adresses IPv6 \u00c0 la place des classes, IPv6 utilise des&nbsp;cat\u00e9gories fonctionnelles&nbsp;: Type Description Exemple Unicast global Comparable au public IPv4, routable sur Internet 2001:db8::\/32&nbsp;(documentation) Link-local Communication sur [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_crdt_document":"","_uag_custom_page_level_css":"","footnotes":""},"class_list":["post-7197","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.6 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>IPV6 les grands types d&#039;adresses - workboot<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/workboot.fr\/ciela\/ipv6-les-grands-types-dadresses\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"IPV6 les grands types d&#039;adresses - workboot\" \/>\n<meta property=\"og:description\" content=\"Les grands types d\u2019adresses IPv6 \u00c0 la place des classes, IPv6 utilise des&nbsp;cat\u00e9gories fonctionnelles&nbsp;: Type Description Exemple Unicast global Comparable au public IPv4, routable sur Internet 2001:db8::\/32&nbsp;(documentation) Link-local Communication sur [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/workboot.fr\/ciela\/ipv6-les-grands-types-dadresses\/\" \/>\n<meta property=\"og:site_name\" content=\"workboot\" \/>\n<meta property=\"article:modified_time\" content=\"2026-03-24T08:31:27+00:00\" \/>\n<meta name=\"twitter:label1\" content=\"Dur\u00e9e de lecture estim\u00e9e\" \/>\n\t<meta name=\"twitter:data1\" content=\"2 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/workboot.fr\\\/ciela\\\/ipv6-les-grands-types-dadresses\\\/\",\"url\":\"https:\\\/\\\/workboot.fr\\\/ciela\\\/ipv6-les-grands-types-dadresses\\\/\",\"name\":\"IPV6 les grands types d'adresses - workboot\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/workboot.fr\\\/ciela\\\/#website\"},\"datePublished\":\"2026-03-23T13:33:02+00:00\",\"dateModified\":\"2026-03-24T08:31:27+00:00\",\"inLanguage\":\"fr-FR\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/workboot.fr\\\/ciela\\\/ipv6-les-grands-types-dadresses\\\/\"]}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/workboot.fr\\\/ciela\\\/#website\",\"url\":\"https:\\\/\\\/workboot.fr\\\/ciela\\\/\",\"name\":\"workboot\",\"description\":\"Open Source, Open Minds \",\"publisher\":{\"@id\":\"https:\\\/\\\/workboot.fr\\\/ciela\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/workboot.fr\\\/ciela\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"fr-FR\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/workboot.fr\\\/ciela\\\/#organization\",\"name\":\"workboot\",\"url\":\"https:\\\/\\\/workboot.fr\\\/ciela\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"fr-FR\",\"@id\":\"https:\\\/\\\/workboot.fr\\\/ciela\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/workboot.fr\\\/ciela\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/logo_ciel-dorian-1.png\",\"contentUrl\":\"https:\\\/\\\/workboot.fr\\\/ciela\\\/wp-content\\\/uploads\\\/2025\\\/05\\\/logo_ciel-dorian-1.png\",\"width\":1024,\"height\":950,\"caption\":\"workboot\"},\"image\":{\"@id\":\"https:\\\/\\\/workboot.fr\\\/ciela\\\/#\\\/schema\\\/logo\\\/image\\\/\"}}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"IPV6 les grands types d'adresses - workboot","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/workboot.fr\/ciela\/ipv6-les-grands-types-dadresses\/","og_locale":"fr_FR","og_type":"article","og_title":"IPV6 les grands types d'adresses - workboot","og_description":"Les grands types d\u2019adresses IPv6 \u00c0 la place des classes, IPv6 utilise des&nbsp;cat\u00e9gories fonctionnelles&nbsp;: Type Description Exemple Unicast global Comparable au public IPv4, routable sur Internet 2001:db8::\/32&nbsp;(documentation) Link-local Communication sur [&hellip;]","og_url":"https:\/\/workboot.fr\/ciela\/ipv6-les-grands-types-dadresses\/","og_site_name":"workboot","article_modified_time":"2026-03-24T08:31:27+00:00","twitter_misc":{"Dur\u00e9e de lecture estim\u00e9e":"2 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/workboot.fr\/ciela\/ipv6-les-grands-types-dadresses\/","url":"https:\/\/workboot.fr\/ciela\/ipv6-les-grands-types-dadresses\/","name":"IPV6 les grands types d'adresses - workboot","isPartOf":{"@id":"https:\/\/workboot.fr\/ciela\/#website"},"datePublished":"2026-03-23T13:33:02+00:00","dateModified":"2026-03-24T08:31:27+00:00","inLanguage":"fr-FR","potentialAction":[{"@type":"ReadAction","target":["https:\/\/workboot.fr\/ciela\/ipv6-les-grands-types-dadresses\/"]}]},{"@type":"WebSite","@id":"https:\/\/workboot.fr\/ciela\/#website","url":"https:\/\/workboot.fr\/ciela\/","name":"workboot","description":"Open Source, Open Minds ","publisher":{"@id":"https:\/\/workboot.fr\/ciela\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/workboot.fr\/ciela\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"fr-FR"},{"@type":"Organization","@id":"https:\/\/workboot.fr\/ciela\/#organization","name":"workboot","url":"https:\/\/workboot.fr\/ciela\/","logo":{"@type":"ImageObject","inLanguage":"fr-FR","@id":"https:\/\/workboot.fr\/ciela\/#\/schema\/logo\/image\/","url":"https:\/\/workboot.fr\/ciela\/wp-content\/uploads\/2025\/05\/logo_ciel-dorian-1.png","contentUrl":"https:\/\/workboot.fr\/ciela\/wp-content\/uploads\/2025\/05\/logo_ciel-dorian-1.png","width":1024,"height":950,"caption":"workboot"},"image":{"@id":"https:\/\/workboot.fr\/ciela\/#\/schema\/logo\/image\/"}}]}},"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false},"uagb_author_info":{"display_name":"admin","author_link":"https:\/\/workboot.fr\/ciela\/author\/admin\/"},"uagb_comment_info":0,"uagb_excerpt":"Les grands types d\u2019adresses IPv6 \u00c0 la place des classes, IPv6 utilise des&nbsp;cat\u00e9gories fonctionnelles&nbsp;: Type Description Exemple Unicast global Comparable au public IPv4, routable sur Internet 2001:db8::\/32&nbsp;(documentation) Link-local Communication sur [&hellip;]","_links":{"self":[{"href":"https:\/\/workboot.fr\/ciela\/wp-json\/wp\/v2\/pages\/7197","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/workboot.fr\/ciela\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/workboot.fr\/ciela\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/workboot.fr\/ciela\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/workboot.fr\/ciela\/wp-json\/wp\/v2\/comments?post=7197"}],"version-history":[{"count":4,"href":"https:\/\/workboot.fr\/ciela\/wp-json\/wp\/v2\/pages\/7197\/revisions"}],"predecessor-version":[{"id":7278,"href":"https:\/\/workboot.fr\/ciela\/wp-json\/wp\/v2\/pages\/7197\/revisions\/7278"}],"wp:attachment":[{"href":"https:\/\/workboot.fr\/ciela\/wp-json\/wp\/v2\/media?parent=7197"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}