{"id":43699,"date":"2022-05-26T10:45:34","date_gmt":"2022-05-26T09:45:34","guid":{"rendered":"https:\/\/kinsta.com\/dk\/?p=43699&#038;preview=true&#038;preview_id=43699"},"modified":"2023-09-08T09:04:50","modified_gmt":"2023-09-08T08:04:50","slug":"ipv4-vs-ipv6","status":"publish","type":"post","link":"https:\/\/kinsta.com\/dk\/blog\/ipv4-vs-ipv6\/","title":{"rendered":"IPv4 vs IPv6: Hvad er forskellen mellem de to protokoller?"},"content":{"rendered":"<p>Forvirret over forskellen mellem IPv4 vs IPv6?<\/p>\n<p>IP, en forkortelse for <strong>I<\/strong>nternet <strong>P<\/strong>rotocol, er en protokol, der hj\u00e6lper computere\/enheder med at kommunikere med hinanden over et netv\u00e6rk. Som &#8220;v&#8221; i navnet antyder, er der forskellige versioner af Internet Protocol: IPv4 og IPv6.<\/p>\n<p>I dette indl\u00e6g vil vi grave i alt, hvad du beh\u00f8ver at vide for at forst\u00e5 forskellen mellem IPv4 og IPv6. Her er, hvad vi vil d\u00e6kke:<\/p>\n<h2>Hvad er Internet Protocol (IP)?<\/h2>\n<p>Internet Protocol (IP) er et s\u00e6t regler, der hj\u00e6lper med at dirigere pakker af data, s\u00e5 data kan flyttes p\u00e5 tv\u00e6rs af netv\u00e6rk og n\u00e5 frem til den rigtige destination.<\/p>\n<p>N\u00e5r en computer fors\u00f8ger at sende information, bliver den opdelt i mindre bidder, kaldet pakker. For at sikre, at alle disse pakker n\u00e5r det rigtige sted, indeholder hver pakke IP-oplysninger.<\/p>\n<p>Den anden del af puslespillet er, at hver enhed eller <a href=\"https:\/\/kinsta.com\/dk\/blog\/sadan-vaelges-domaenenavn\/\">dom\u00e6ne<\/a> p\u00e5 internettet er tildelt en IP-adresse, der unikt identificerer den fra andre enheder.<\/p>\n<p>Dette inkluderer din egen computer, som du sikkert har st\u00f8dt p\u00e5 f\u00f8r. Hvis du g\u00e5r til en af \u200b\u200bde mange <a href=\"https:\/\/kinsta.com\/dk\/v\u00e6rkt\u00f8jer\/hvad-er-min-ip\/\">&#8220;Hvad er min IP-adresse?&#8221; v\u00e6rkt\u00f8jer<\/a>, vil de vise dig din computers IP-adresse og et groft g\u00e6t p\u00e5 din placering <em>(hvilket burde v\u00e6re n\u00f8jagtigt, medmindre du bruger en VPN)<\/em>.<\/p>\n<p>Den IP-adresse, du er mest bekendt med, ser sandsynligvis s\u00e5dan ud:<\/p>\n<p><code>192.168.10.150<\/code><\/p>\n<p>Ved at tildele hver enhed en IP-adresse, er netv\u00e6rk i stand til effektivt at dirigere alle disse datapakker rundt og sikre, at de n\u00e5r hen til det rigtige sted.<\/p>\n<h3>Hvad er IPv4?<\/h3>\n<p>P\u00e5 trods af &#8220;4&#8221; tallet i navnet er IPv4 faktisk den f\u00f8rste version af IP, der skal bruges. Det blev lanceret helt tilbage i 1983, og selv i dag er det stadig den mest kendte version til at identificere enheder p\u00e5 et netv\u00e6rk.<\/p>\n<p>IPv4 bruger en 32-bit adresse, hvilket er det format, som du nok er mest bekendt med, n\u00e5r du diskuterer en &#8220;IP-adresse&#8221;. Dette 32-bit adresserum giver n\u00e6sten 4,3 milliarder unikke adresser, selvom nogle IP-blokke er reserveret til specielle form\u00e5l.<\/p>\n<p>Her er et eksempel p\u00e5 en IPv4-adresse:<\/p>\n<p><code>192.168.10.150<\/code><\/p>\n<h3>Hvad er IPv6?<\/h3>\n<p>IPv6 er en nyere version af IP, der bruger et 128-bit adresseformat og inkluderer b\u00e5de tal og bogstaver. Her er et eksempel p\u00e5 en IPv6-adresse:<\/p>\n<p><code>3002:0bd6:0000:0000:0000:ee00:0033:6778<\/code><\/p>\n<h3>Hvorfor havde vi brug for en ny version af IP?<\/h3>\n<p>P\u00e5 dette tidspunkt undrer du dig m\u00e5ske over, hvorfor IPv6 overhovedet eksisterer.<\/p>\n<p>Selvom de 4,3 milliarder potentielle IP-adresser i IPv4 kan virke som mange, har vi brug for mange flere IP-adresser!<\/p>\n<p>Der er mange mennesker i verden med mange enheder. Dette er et endnu st\u00f8rre problem med fremkomsten af \u200b\u200bIoT-enheder (Internet of Things) og sensorer, da disse i h\u00f8j grad udvider puljen af \u200b\u200btilsluttede enheder.<\/p>\n<p>Kort sagt var verden ved at l\u00f8be t\u00f8r for unikke IPv4-adresser, hvilket er den st\u00f8rste grund til, at vi havde brug for IPv6.<\/p>\n<p>Der er dog ogs\u00e5 nogle andre mere smarte tekniske grunde &#8211; lad os diskutere dem.<\/p>\n\n\n<div  class=\"featured-snippet\" id=\"featuredSnippet\">\n    <div class=\"featured-snippet__content\">\n        <h2>Hvad er forskellen mellem IPv4 vs IPv6?<\/h2>\n        <div><p>Den mest \u00e5benlyse forskel er, at IPv4 bruger en 32-bit adresse, mens IPv6 bruger en 128-bit adresse. Det betyder, at IPv6 tilbyder 1.028 gange flere adresser end IPv4, hvilket i det v\u00e6sentlige l\u00f8ser problemet med at &#8220;l\u00f8be t\u00f8r for adresser&#8221; (i hvert fald i en overskuelig fremtid).<\/p>\n<\/div>\n    <\/div>\n    <div class=\"featured-snippet__footer\">\n        <div class=\"arrow-down\"><\/div>\n        <div class=\"featured-snippet__footer--content row nocol middle-xs between-xs reverse\">\n            <div style=\"margin-left: auto; position: relative; top: -1px\" class=\"row nocol middle-xs\">\n                <div class=\"color--mediumGray\" style=\"font-size: 14px; vertical-align: middle;\">\n                    <svg  class=\"icon icon--logo display--block\" aria-hidden=\"true\" focusable=\"false\"><use xlink:href=\"https:\/\/kinsta.com\/dk\/wp-content\/themes\/kinsta\/dist\/sprite.svg?v=e8af2143e3b8bceb5561b327e81ec085#logo\" \/><\/svg>                <\/div>\n                <div class=\"text--bold color--mediumGray\" style=\"padding-left: 3px;\">Support<\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<p>IPv6 er ogs\u00e5 en alfanumerisk adresse adskilt af kolon, mens IPv4 kun er numerisk og adskilt af punktum. Igen, her er et eksempel p\u00e5 hver:<\/p>\n<ul>\n<li>IPv4 &#8211; <code>192.168.10.150<\/code><\/li>\n<li>IPv6 &#8211; <code>3002:0bd6:0000:0000:0000:ee00:0033:6778<\/code><\/li>\n<\/ul>\n<p>Der er ogs\u00e5 nogle tekniske forskelle mellem IPv4 vs IPv6, selvom ikke-udviklere egentlig ikke beh\u00f8ver at kende dem.<\/p>\n<p>Nogle af de mest bem\u00e6rkelsesv\u00e6rdige tekniske forskelle er, at:<\/p>\n<ul>\n<li>IPv6 inkluderer indbygget Quality of Service (QoS).<\/li>\n<li>IPv6 har et indbygget network security layer (IPsec).<\/li>\n<li>IPv6 eliminerer Network Address Translation (NAT) og tillader end-to-end-forbindelse p\u00e5 IP-laget.<\/li>\n<li>Multicasting er en del af basis specifikationerne i IPv6, mens det er valgfrit i IPv4. Multicasting giver mulighed for transmission af en pakke til flere destinationer i en enkelt operation.<\/li>\n<li>IPv6 har st\u00f8rre pakkeheadere (ca. dobbelt s\u00e5 store som IPv4).<\/li>\n<\/ul>\n<h3>Hvor mange adresser er der i IPv4 vs IPv6?<\/h3>\n<p>Som vi n\u00e6vnte ovenfor, underst\u00f8tter IPv6 1.028 gange flere IP-adresser end IPv4.<\/p>\n<p>IPv4 underst\u00f8tter omkring 4,29 milliarder adresser.<\/p>\n<p>IPv6, p\u00e5 den anden side, underst\u00f8tter \u2026 ja, den nemmeste m\u00e5de at skrive det p\u00e5 er <code>2^128<\/code> forskellige adresser. Hvis du er interesseret i det n\u00f8jagtige antal, her er hvor mange unikke adresser IPv6 tilbyder: 340,282,366,920,938,463,463,374,607,431,768,211,456<\/p>\n<p>Det betyder, at vi har lang vej igen, f\u00f8r vi l\u00f8ber t\u00f8r for IPv6-adresser!<\/p>\n<h3>Hvad er hurtigere: IPv4 eller IPv6?<\/h3>\n<p>Generelt er der ingen st\u00f8rre forskel mellem IPv4 vs IPv6 hastigheder, selvom nogle beviser tyder p\u00e5, at IPv6 kan v\u00e6re lidt hurtigere i nogle situationer.<\/p>\n<p>P\u00e5 &#8220;ingen forskel&#8221;-siden <a href=\"https:\/\/blog.sucuri.net\/2016\/08\/ipv4-vs-ipv6-performance-comparison.html\">k\u00f8rte Sucuri en r\u00e6kke tests<\/a> p\u00e5 websteder, der underst\u00f8ttede b\u00e5de IPv4 og IPv6, og fandt ud af, at der dybest set ingen forskel var p\u00e5 de fleste websteder, som de testede.<\/p>\n<p>Du kan dog ogs\u00e5 finde nogle beviser, der viser, at IPv6 er hurtigere. For eksempel udtalte <a href=\"https:\/\/engineering.fb.com\/2015\/09\/14\/networking-traffic\/ipv6-it-s-time-to-get-on-board\/\">Facebooks Engineering-blog<\/a>, at &#8220;Vi har observeret, at adgang til Facebook kan v\u00e6re 10-15 procent hurtigere over IPv6&#8221;.<\/p>\n<p>P\u00e5 samme m\u00e5de <a href=\"https:\/\/www.akamai.com\/blog\/trends\/10-years-since-world-ipv6-launch\">testede Akamai<\/a> en enkelt <a href=\"https:\/\/kinsta.com\/blog\/what-is-a-url\/\">URL<\/a> p\u00e5 et iPhone\/mobilnetv\u00e6rk og s\u00e5, at siden havde en median-indl\u00e6sningstid, der var 5% hurtigere med IPv6 vs. IPv4.<\/p>\n<p>Der er dog mange variabler, s\u00e5 det er sv\u00e6rt at <a href=\"https:\/\/kinsta.com\/blog\/debugging-wordpress-performance\/\">sammenligne ydeevne<\/a> uden at k\u00f8re stramt kontrollerede eksperimenter.<\/p>\n<p>En grund til, at IPv6 kan v\u00e6re hurtigere, er, at det ikke spilder tid p\u00e5 Network Address Translation (NAT). IPv6 har dog ogs\u00e5 st\u00f8rre packet headers, s\u00e5 det kan potentielt v\u00e6re langsommere i nogle tilf\u00e6lde.<\/p>\n<h3>Er IPv4 eller IPv6 mere popul\u00e6r?<\/h3>\n<p>Selvom tallene \u00e6ndrer sig, efterh\u00e5nden som IPv6 \u00f8ger dens anvendelse, er IPv4 stadig den mest udbredte internet protocol.<\/p>\n<figure id=\"attachment_78451\" aria-describedby=\"caption-attachment-78451\" style=\"width: 1018px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-78451 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2020\/08\/IPv6-adoption.png\" alt=\"IPv6 vedtagelse p\u00e5 verdensplan\" width=\"1018\" height=\"663\"><figcaption id=\"caption-attachment-78451\" class=\"wp-caption-text\">IPv6 vedtagelse p\u00e5 verdensplan<\/figcaption><\/figure>\n<p>Google <a href=\"https:\/\/www.google.com\/intl\/en\/ipv6\/statistics.html\">vedligeholder offentlige statistikker<\/a> for IPv6-tilg\u00e6ngelighed for Google-brugere efter lande rundt om i verden. Disse tal er procentdelen af al trafik til Google-websteder, der er over IPv6 i stedet for IPv4.<\/p>\n<p>P\u00e5 verdensplan har IPv6 omkring ~32% tilg\u00e6ngelighed, men det er meget forskelligt fra land til land. For eksempel har USA over 41% IPv6-adoption, mens Storbritannien har omkring 30% adoption, og Spanien har kun 2,5% adoption.<\/p>\n<figure id=\"attachment_78452\" aria-describedby=\"caption-attachment-78452\" style=\"width: 1014px\" class=\"wp-caption alignnone\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-78452 size-full\" src=\"https:\/\/kinsta.com\/wp-content\/uploads\/2020\/08\/Per-Country-IPv6-adoption.png\" alt=\"Overtagelse af IPv6 pr. Land\" width=\"1014\" height=\"684\"><figcaption id=\"caption-attachment-78452\" class=\"wp-caption-text\">Overtagelse af IPv6 pr. Land<\/figcaption><\/figure>\n<h2>Hvilken version internet protocol bruger Kinsta?<\/h2>\n<p>Hvis du <a href=\"https:\/\/kinsta.com\/dk\/wordpress-hosting\/\">hoster dit websted hos Kinsta<\/a>, spekulerer du m\u00e5ske p\u00e5, om Kinsta bruger IPv4 eller IPv6. Kinsta <a href=\"https:\/\/kinsta.com\/docs\/wordpress-hosting\/site-management\/ip-addresses\/#site-ip-address-ipv4\">bruger i \u00f8jeblikket IPv4<\/a>.<\/p>\n<p>Hvorfor? Fordi Kinsta er <a href=\"https:\/\/kinsta.com\/dk\/blog\/cloud-platform-for-udviklere\/\">drevet af Premium Tier fra Google Cloud<\/a>, og p\u00e5 nuv\u00e6rende tidspunkt underst\u00f8tter Google Cloud ikke fuldt ud IPv6.<\/p>\n<p>N\u00e5r det er sagt, er IPv6-underst\u00f8ttelse p\u00e5 Google Clouds k\u00f8replan, s\u00e5 dette kan \u00e6ndre sig i fremtiden. Der er dog ingen officiel tidslinje for, hvorn\u00e5r Google Cloud tilf\u00f8jer IPv6-underst\u00f8ttelse.<\/p>\n<aside role=\"note\" class=\"wp-block-kinsta-notice is-style-info\">\n            <h3>Info<\/h3>\n        <p>Kinsta underst\u00f8tter IPv6 med <a href=\"https:\/\/anchor.host\/enabling-ipv6-with-kinstas-cloudflare-integration\/\">st\u00f8tte fra Cloudflare<\/a>.<\/p>\n<\/aside>\n\n\n<h2>Opsummering<\/h2>\n<p>Internet Protocol (IP) hj\u00e6lper med at dirigere data rundt i netv\u00e6rk. For at opn\u00e5 dette tildeles hver enhed en IP-adresse.<\/p>\n<p>IPv4 er den originale version, der blev lanceret tilbage i 1983. Dens 32-bit format tillader dog kun ~4,3 milliarder unikke adresser, som ikke kan opfylde behovene i den moderne verden.<\/p>\n<p>For at afhj\u00e6lpe manglen p\u00e5 unikke IPv4-adresser (og foretage nogle andre tekniske \u00e6ndringer), blev IPv6 oprettet. IPv6 bruger et 128-bit adresseformat, der tillader 3,4 x 1038 unikke IP-adresser.<\/p>\n<p>For de fleste mennesker er det alt, du beh\u00f8ver at vide &#8211; IPv6 bruger et andet format og tilbyder langt flere unikke adresser end IPv4.<\/p>\n<p>Kinsta bruger IPv4, fordi GCP, som <a href=\"https:\/\/kinsta.com\/dk\/wordpress-hosting\/\">underst\u00f8tter Kinstas infrastruktur<\/a>, endnu ikke har udrullet IPv6-underst\u00f8ttelse. IPv6 er p\u00e5 Google Clouds k\u00f8replan, s\u00e5 dette kan \u00e6ndre sig i fremtiden.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Forvirret over forskellen mellem IPv4 vs IPv6? IP, en forkortelse for Internet Protocol, er en protokol, der hj\u00e6lper computere\/enheder med at kommunikere med hinanden over et &#8230;<\/p>\n","protected":false},"author":103,"featured_media":43701,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[100,447],"topic":[703],"class_list":["post-43699","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","tag-googlecloud","tag-ipv4","topic-internet-protokol"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>IPv4 vs IPv6: Hvad er forskellen mellem de to protokoller? - Kinsta\u00ae<\/title>\n<meta name=\"description\" content=\"Hvad er forskellen mellem IPv4 vs IPv6? 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