{"id":7101,"date":"2023-10-30T08:06:22","date_gmt":"2023-10-30T08:06:22","guid":{"rendered":"https:\/\/www.webhi.com\/how-to\/?p=7101"},"modified":"2023-10-30T08:06:24","modified_gmt":"2023-10-30T08:06:24","slug":"desactiver-ipv6-ubuntu-debian-centos-redhat","status":"publish","type":"post","link":"https:\/\/www.webhi.com\/how-to\/fr\/desactiver-ipv6-ubuntu-debian-centos-redhat\/","title":{"rendered":"D\u00e9sactiver IPv6 dans Ubuntu\/Debian et CentOS\/RedHat"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1200\" height=\"675\" src=\"https:\/\/www.webhi.com\/how-to\/gilrogre\/2023\/10\/ipv6_disabel_fr.jpg\" alt=\"Comment d\u00e9sactiver IPv6 dans Ubuntu\/Debian et CentOS\/RedHat Alma linux , rocky linux\" class=\"wp-image-7111\" srcset=\"https:\/\/www.webhi.com\/how-to\/gilrogre\/2023\/10\/ipv6_disabel_fr.jpg 1200w, https:\/\/www.webhi.com\/how-to\/gilrogre\/2023\/10\/ipv6_disabel_fr-300x169.jpg 300w, https:\/\/www.webhi.com\/how-to\/gilrogre\/2023\/10\/ipv6_disabel_fr-1024x576.jpg 1024w, https:\/\/www.webhi.com\/how-to\/gilrogre\/2023\/10\/ipv6_disabel_fr-768x432.jpg 768w, https:\/\/www.webhi.com\/how-to\/gilrogre\/2023\/10\/ipv6_disabel_fr-150x84.jpg 150w\" sizes=\"(max-width: 1200px) 100vw, 1200px\" \/><\/figure>\n\n\n\n<p><strong>IPv6<\/strong> (Internet Protocol version 6) est la version la plus r\u00e9cente du protocole Internet (IP), le protocole de communication qui fournit un syst\u00e8me d&#8217;identification et de localisation pour les ordinateurs sur les r\u00e9seaux et achemine le trafic sur Internet. IPv6 a \u00e9t\u00e9 d\u00e9velopp\u00e9 pour r\u00e9soudre le probl\u00e8me anticip\u00e9 depuis longtemps de l&#8217;\u00e9puisement des adresses IPv4 et fournit beaucoup plus d&#8217;adresses que IPv4. Cependant, de nombreuses organisations peuvent vouloir d\u00e9sactiver IPv6 pour diverses raisons comme des probl\u00e8mes de compatibilit\u00e9, des pr\u00e9occupations de s\u00e9curit\u00e9 ou un manque de support.<\/p>\n\n\n\n<p>La d\u00e9sactivation d&#8217;IPv6 dans les distributions Linux comme Ubuntu\/Debian et CentOS\/RedHat peut se faire en quelques \u00e9tapes simples. Voici un guide d\u00e9taill\u00e9 sur la fa\u00e7on de d\u00e9sactiver IPv6 dans ces distributions.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"raisons-de-d%C3%A9sactiver-ipv6\">Raisons de d\u00e9sactiver IPv6<\/h2>\n\n\n\n<p>Voici quelques raisons cl\u00e9s pour lesquelles vous voudrez peut-\u00eatre d\u00e9sactiver IPv6 :<\/p>\n\n\n\n<ul>\n<li><strong>Probl\u00e8mes de compatibilit\u00e9<\/strong>&nbsp;: De nombreux appareils, applications et r\u00e9seaux plus anciens ne prennent pas en charge IPv6. Le d\u00e9sactiver emp\u00eache les probl\u00e8mes de compatibilit\u00e9.<\/li>\n\n\n\n<li><strong>Pr\u00e9occupations de s\u00e9curit\u00e9<\/strong>&nbsp;: Les protocoles IPv6 comme Neighbor Discovery et Stateless Address Autoconfiguration ont des implications en mati\u00e8re de s\u00e9curit\u00e9. La d\u00e9sactivation d&#8217;IPv6 am\u00e9liore la s\u00e9curit\u00e9.<\/li>\n\n\n\n<li><strong>Manque de support<\/strong>&nbsp;: Si vos \u00e9quipements r\u00e9seau, logiciels ou fournisseurs de cloud ne prennent pas en charge IPv6, il vaut mieux le d\u00e9sactiver.<\/li>\n\n\n\n<li><strong>D\u00e9fis de transition<\/strong>&nbsp;: La migration d&#8217;IPv4 vers IPv6 peut \u00eatre complexe. La d\u00e9sactivation d&#8217;IPv6 permet de reporter la transition.<\/li>\n\n\n\n<li><strong>Instabilit\u00e9 du r\u00e9seau<\/strong>&nbsp;: Un IPv6 mal configur\u00e9 peut provoquer une instabilit\u00e9 du r\u00e9seau et des probl\u00e8mes de connectivit\u00e9.<\/li>\n\n\n\n<li><strong>Fonctionnalit\u00e9<\/strong>&nbsp;: Dans certains cas, IPv6 fournit peu de fonctionnalit\u00e9s suppl\u00e9mentaires, il peut donc ne pas valoir la peine de faire l&#8217;effort.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"d%C3%A9sactiver-ipv6-dans-ubuntu-et-debian\">D\u00e9sactiver IPv6 dans Ubuntu et Debian<\/h2>\n\n\n\n<p>Voici les \u00e9tapes pour d\u00e9sactiver IPv6 dans Ubuntu et d&#8217;autres distributions bas\u00e9es sur Debian comme Linux Mint :<\/p>\n\n\n\n<ul>\n<li>Ouvrez le fichier de configuration du chargeur de d\u00e9marrage GRUB :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo nano \/etc\/default\/grub<\/code><\/pre>\n\n\n\n<ul>\n<li>Trouvez la variable&nbsp;<code>GRUB_CMDLINE_LINUX<\/code>&nbsp;et ajoutez&nbsp;<code>ipv6.disable=1<\/code>&nbsp;:<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"properties\" class=\"language-properties\">GRUB_CMDLINE_LINUX=\"ipv6.disable=1\"<\/code><\/pre>\n\n\n\n<ul>\n<li>Enregistrez et fermez le fichier lorsque vous avez termin\u00e9.<\/li>\n\n\n\n<li>Mettre \u00e0 jour GRUB :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo update-grub<\/code><\/pre>\n\n\n\n<ul>\n<li>Modifiez le fichier de configuration Sysctl :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo nano \/etc\/sysctl.conf<\/code><\/pre>\n\n\n\n<ul>\n<li>Ajoutez les lignes suivantes :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"properties\" class=\"language-properties\">net.ipv6.conf.all.disable_ipv6 = 1\nnet.ipv6.conf.default.disable_ipv6 = 1\nnet.ipv6.conf.lo.disable_ipv6 = 1<\/code><\/pre>\n\n\n\n<ul>\n<li>Enregistrez et fermez le fichier.<\/li>\n\n\n\n<li>Appliquez les modifications :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo sysctl -p<\/code><\/pre>\n\n\n\n<ul>\n<li>Red\u00e9marrez la mise en r\u00e9seau :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo systemctl restart networking<\/code><\/pre>\n\n\n\n<ul>\n<li>V\u00e9rifiez l&#8217;\u00e9tat d&#8217;IPv6 &#8211; il devrait maintenant \u00eatre d\u00e9sactiv\u00e9 :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ ip a<\/code><\/pre>\n\n\n\n<p>Cela d\u00e9sactive compl\u00e8tement IPv6 dans Ubuntu\/Debian. Les modifications persisteront apr\u00e8s le red\u00e9marrage.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"d%C3%A9sactiver-ipv6-dans-centos-et-redhat\">D\u00e9sactiver IPv6 dans CentOS et RedHat<\/h2>\n\n\n\n<p>Voici les \u00e9tapes pour d\u00e9sactiver IPv6 dans CentOS, RedHat et les distributions associ\u00e9es :<\/p>\n\n\n\n<ul>\n<li>Ouvrez le fichier de configuration du chargeur de d\u00e9marrage GRUB :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo nano \/etc\/default\/grub<\/code><\/pre>\n\n\n\n<ul>\n<li>Trouvez la variable&nbsp;<code>GRUB_CMDLINE_LINUX<\/code>&nbsp;et ajoutez&nbsp;<code>ipv6.disable=1<\/code>&nbsp;:<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"properties\" class=\"language-properties\">GRUB_CMDLINE_LINUX=\"ipv6.disable=1\"<\/code><\/pre>\n\n\n\n<ul>\n<li>Enregistrez et fermez le fichier.<\/li>\n\n\n\n<li>Reconstruisez la configuration GRUB :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ grub2-mkconfig -o \/boot\/grub2\/grub.cfg<\/code><\/pre>\n\n\n\n<ul>\n<li>Modifiez le fichier de configuration Sysctl :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo nano \/etc\/sysctl.conf<\/code><\/pre>\n\n\n\n<ul>\n<li>Ajoutez les lignes suivantes :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"properties\" class=\"language-properties\">net.ipv6.conf.all.disable_ipv6 = 1\nnet.ipv6.conf.default.disable_ipv6 = 1\nnet.ipv6.conf.lo.disable_ipv6 = 1<\/code><\/pre>\n\n\n\n<ul>\n<li>Enregistrez et fermez le fichier.<\/li>\n\n\n\n<li>Appliquez les modifications :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo sysctl -p<\/code><\/pre>\n\n\n\n<ul>\n<li>Red\u00e9marrez le service r\u00e9seau :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sudo systemctl restart network<\/code><\/pre>\n\n\n\n<ul>\n<li>V\u00e9rifiez l&#8217;\u00e9tat d&#8217;IPv6 &#8211; il devrait maintenant \u00eatre d\u00e9sactiv\u00e9 :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ ip a<\/code><\/pre>\n\n\n\n<p>Cela d\u00e9sactive compl\u00e8tement IPv6 dans CentOS\/RedHat. Les modifications persisteront apr\u00e8s red\u00e9marrage.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"v%C3%A9rifier-le-statut-ipv6\">V\u00e9rifier le statut IPv6<\/h2>\n\n\n\n<p>Apr\u00e8s avoir d\u00e9sactiv\u00e9 IPv6, certaines commandes qui peuvent \u00eatre utilis\u00e9es pour v\u00e9rifier son \u00e9tat sont :<\/p>\n\n\n\n<ul>\n<li><code>ip a<\/code>&nbsp;&#8211; Ne doit pas afficher d&#8217;adresses IPv6 attribu\u00e9es aux interfaces.<\/li>\n\n\n\n<li><code>ip -6 addr<\/code>&nbsp;&#8211; Ne doit rien renvoyer.<\/li>\n\n\n\n<li><code>ping6 &lt;h\u00f4te&gt;<\/code>&nbsp;&#8211; Doit \u00e9chouer avec &#8220;connect: r\u00e9seau injoignable&#8221;.<\/li>\n\n\n\n<li><code>curl -6 google.com<\/code>&nbsp;&#8211; Doit \u00e9chouer avec &#8220;Impossible de r\u00e9soudre l&#8217;h\u00f4te&#8221;.<\/li>\n\n\n\n<li><code>dig @&lt;server&gt; www.google.com AAAA<\/code>&nbsp;&#8211; Ne doit renvoyer aucun enregistrement IPv6.<\/li>\n\n\n\n<li><code>sysctl net.ipv6.conf.all.disable_ipv6<\/code>&nbsp;&#8211; Doit renvoyer&nbsp;<code>net.ipv6.conf.all.disable_ipv6 = 1<\/code>.<\/li>\n\n\n\n<li><code>cat \/proc\/net\/if_inet6<\/code>&nbsp;&#8211; Doit \u00eatre vide.<\/li>\n<\/ul>\n\n\n\n<p>Cela confirme qu&#8217;IPv6 est d\u00e9sactiv\u00e9 avec succ\u00e8s.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"probl%C3%A8mes-potentiels-lors-de-la-d%C3%A9sactivation-dipv6\">Probl\u00e8mes potentiels lors de la d\u00e9sactivation d&#8217;IPv6<\/h2>\n\n\n\n<p>Quelques probl\u00e8mes potentiels dont il faut \u00eatre conscient lors de la d\u00e9sactivation d&#8217;IPv6 :<\/p>\n\n\n\n<ul>\n<li>Toute application\/service explicitement d\u00e9pendant d&#8217;IPv6 sera interrompu.<\/li>\n\n\n\n<li>Les logiciels de surveillance et de gestion du r\u00e9seau peuvent avertir de l&#8217;indisponibilit\u00e9 d&#8217;IPv6.<\/li>\n\n\n\n<li>Certaines applications peuvent toujours tenter d&#8217;utiliser IPv6 et expirer avant de revenir \u00e0 IPv4.<\/li>\n\n\n\n<li>Les journaux du noyau peuvent contenir des messages d&#8217;erreur IPv6 en raison de son indisponibilit\u00e9.<\/li>\n\n\n\n<li>Certaines applications qui s&#8217;attendent \u00e0 la configuration automatique IPv6 seront affect\u00e9es.<\/li>\n\n\n\n<li>La connexion \u00e0 distance via SSH pourrait \u00e9chouer si IPv6 est d\u00e9sactiv\u00e9 sur le serveur mais activ\u00e9 sur le client.<\/li>\n\n\n\n<li>Peut affecter la connectivit\u00e9 VPN IPsec entre sites si elle d\u00e9pend d&#8217;IPv6.<\/li>\n\n\n\n<li>Pourrait avoir un impact sur les impl\u00e9mentations double pile interagissant avec des syst\u00e8mes IPv4 uniquement.<\/li>\n\n\n\n<li>Le d\u00e9pannage et le d\u00e9bogage des probl\u00e8mes r\u00e9seau peuvent devenir plus difficiles.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"d%C3%A9pannage-des-probl%C3%A8mes-apr%C3%A8s-la-d%C3%A9sactivation-dipv6\">D\u00e9pannage des probl\u00e8mes apr\u00e8s la d\u00e9sactivation d&#8217;IPv6<\/h2>\n\n\n\n<p>Si vous rencontrez des probl\u00e8mes apr\u00e8s la d\u00e9sactivation d&#8217;IPv6, certaines \u00e9tapes de d\u00e9pannage incluent :<\/p>\n\n\n\n<ul>\n<li>Examiner les journaux d&#8217;application pour identifier les \u00e9checs li\u00e9s \u00e0 l&#8217;absence de connectivit\u00e9 IPv6.<\/li>\n\n\n\n<li>V\u00e9rifier si des VPN IPsec configur\u00e9s d\u00e9pendent d&#8217;IPv6 entre les points de terminaison et modifier leur configuration si n\u00e9cessaire.<\/li>\n\n\n\n<li>V\u00e9rifier s&#8217;il existe des probl\u00e8mes DNS ou de routage pouvant survenir de la d\u00e9sactivation d&#8217;IPv6 sur certains syst\u00e8mes uniquement.<\/li>\n\n\n\n<li>Pour les probl\u00e8mes de connexion \u00e0 distance, v\u00e9rifier que le serveur SSH et le client ont soit les deux IPv6 d\u00e9sactiv\u00e9 ou activ\u00e9.<\/li>\n\n\n\n<li>Essayez de r\u00e9activer IPv6 temporairement pour voir si un probl\u00e8me particulier est r\u00e9solu &#8211; cela peut indiquer sa cause.<\/li>\n\n\n\n<li>Modifiez les configurations des services\/applications concern\u00e9s pour ne pas d\u00e9pendre ou pr\u00e9f\u00e9rer IPv6 si possible.<\/li>\n\n\n\n<li>Mettre \u00e0 jour les syst\u00e8mes de surveillance\/gestion du r\u00e9seau pour supprimer les alertes d&#8217;\u00e9tat IPv6 pour les interfaces d\u00e9sactiv\u00e9es.<\/li>\n\n\n\n<li>Effacer toutes les adresses IPv6 attribu\u00e9es manuellement aux interfaces avant de le d\u00e9sactiver.<\/li>\n<\/ul>\n\n\n\n<p>Apr\u00e8s d\u00e9pannage, vous pouvez prendre des mesures correctives appropri\u00e9es comme reconfigurer les syst\u00e8mes\/services concern\u00e9s, mettre \u00e0 jour les d\u00e9pendances ou modifier la port\u00e9e d&#8217;IPv6 d\u00e9sactiv\u00e9e.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"r%C3%A9activer-ipv6\">R\u00e9activer IPv6<\/h2>\n\n\n\n<p>Si vous devez r\u00e9activer IPv6 apr\u00e8s l&#8217;avoir d\u00e9sactiv\u00e9, les \u00e9tapes seraient :<\/p>\n\n\n\n<ul>\n<li>Supprimez le drapeau&nbsp;<code>ipv6.disable=1<\/code>&nbsp;de&nbsp;<code>GRUB_CMDLINE_LINUX<\/code>&nbsp;dans&nbsp;<code>\/etc\/default\/grub<\/code>.<\/li>\n\n\n\n<li>Supprimez les lignes&nbsp;<code>net.ipv6.conf.* disable_ipv6<\/code>&nbsp;de&nbsp;<code>\/etc\/sysctl.conf<\/code>.<\/li>\n\n\n\n<li>Reconstruisez la configuration GRUB :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ grub2-mkconfig -o \/boot\/grub2\/grub.cfg<\/code><\/pre>\n\n\n\n<ul>\n<li>Rechargez les param\u00e8tres sysctl :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ sysctl -p<\/code><\/pre>\n\n\n\n<ul>\n<li>Red\u00e9marrez la mise en r\u00e9seau :<\/li>\n<\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code lang=\"bash\" class=\"language-bash\">$ systemctl restart network<\/code><\/pre>\n\n\n\n<ul>\n<li>Attribuez des adresses IPv6 aux interfaces si n\u00e9cessaire.<\/li>\n\n\n\n<li>V\u00e9rifiez la fonctionnalit\u00e9 IPv6 \u00e0 l&#8217;aide de&nbsp;<code>ping6<\/code>,&nbsp;<code>curl<\/code>, etc.<\/li>\n<\/ul>\n\n\n\n<p>Les \u00e9tapes peuvent varier l\u00e9g\u00e8rement selon la distribution. Cela r\u00e9activera la prise en charge IPv6.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"conclusion\">Conclusion<\/h2>\n\n\n\n<p>La d\u00e9sactivation d&#8217;IPv6 dans les distributions Linux comme Ubuntu\/Debian et CentOS\/RedHat peut se faire en modifiant les param\u00e8tres de d\u00e9marrage GRUB et les param\u00e8tres Sysctl. Cela emp\u00eache l&#8217;attribution et l&#8217;utilisation d&#8217;adresses IPv6 dans tout le syst\u00e8me. Des pr\u00e9cautions doivent \u00eatre prises pour garantir que les services\/applications d\u00e9pendants sont correctement transf\u00e9r\u00e9s. Le processus peut \u00eatre invers\u00e9 pour r\u00e9activer IPv6 si n\u00e9cessaire. Cela fournit un moyen simple de d\u00e9sactiver IPv6 si votre environnement n&#8217;est pas encore pr\u00eat pour cela.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>IPv6 (Internet Protocol version 6) est la version la plus r\u00e9cente du protocole Internet (IP), le protocole de communication qui fournit un syst\u00e8me d&#8217;identification et de localisation pour les ordinateurs sur les r\u00e9seaux et achemine le trafic sur Internet. IPv6 a \u00e9t\u00e9 d\u00e9velopp\u00e9 pour r\u00e9soudre le probl\u00e8me anticip\u00e9 depuis longtemps de l&#8217;\u00e9puisement des adresses IPv4 ..<\/p>\n<div class=\"clear-fix\"><\/div>\n<p><a href=\"https:\/\/www.webhi.com\/how-to\/fr\/desactiver-ipv6-ubuntu-debian-centos-redhat\/\" title=\"read more...\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[67],"tags":[],"yoast_head":"\n<title>D\u00e9sactiver IPv6 dans Ubuntu\/Debian et CentOS\/RedHat - WebHi Tutorials &amp; Documentations<\/title>\n<meta name=\"description\" content=\"Apprendre \u00e0 d\u00e9sactiver IPv6 dans les distributions Linux Ubuntu\/Debian et CentOS\/RedHat en modifiant les param\u00e8tres GRUB et Sysctl.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.webhi.com\/how-to\/fr\/desactiver-ipv6-ubuntu-debian-centos-redhat\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"D\u00e9sactiver IPv6 dans Ubuntu\/Debian et CentOS\/RedHat - WebHi Tutorials &amp; 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