docker-documentation/general/split-dns/index.html

<!doctype html><html lang=en class=no-js> <head><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><meta name=description content="Welcome to the home of the LinuxServer.io documentation!"><meta name=author content=LinuxServer.io><link href=https://docs.linuxserver.io/general/split-dns/ rel=canonical><link href=../how-to-get-support/ rel=prev><link href=../../images/docker-adguardhome-sync/ rel=next><link rel=icon href=../../assets/favicon.ico><meta name=generator content="mkdocs-1.6.0, mkdocs-material-9.5.19"><title>Split dns - LinuxServer.io</title><link rel=stylesheet href=../../assets/stylesheets/main.66ac8b77.min.css><link rel=stylesheet href=../../assets/stylesheets/palette.06af60db.min.css><link rel=preconnect href=https://fonts.gstatic.com crossorigin><link rel=stylesheet href="https://fonts.googleapis.com/css?family=Roboto:300,300i,400,400i,700,700i%7CRoboto+Mono:400,400i,700,700i&display=fallback"><style>:root{--md-text-font:"Roboto";--md-code-font:"Roboto Mono"}</style><script>__md_scope=new URL("../..",location),__md_hash=e=>[...e].reduce((e,_)=>(e<<5)-e+_.charCodeAt(0),0),__md_get=(e,_=localStorage,t=__md_scope)=>JSON.parse(_.getItem(t.pathname+"."+e)),__md_set=(e,_,t=localStorage,a=__md_scope)=>{try{t.setItem(a.pathname+"."+e,JSON.stringify(_))}catch(e){}}</script></head> <body dir=ltr data-md-color-scheme=default data-md-color-primary=purple data-md-color-accent=indigo> <input class=md-toggle data-md-toggle=drawer type=checkbox id=__drawer autocomplete=off> <input class=md-toggle data-md-toggle=search type=checkbox id=__search autocomplete=off> <label class=md-overlay for=__drawer></label> <div data-md-component=skip> <a href=#split-dns class=md-skip> Skip to content </a> </div> <div data-md-component=announce> </div> <header class=md-header data-md-component=header> <nav class="md-header__inner md-grid" aria-label=Header> <a href=../.. title=LinuxServer.io class="md-header__button md-logo" aria-label=LinuxServer.io data-md-component=logo> <img src=../../assets/icon.svg alt=logo> </a> <label class="md-header__button md-icon" for=__drawer> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M3 6h18v2H3V6m0 5h18v2H3v-2m0 5h18v2H3v-2Z"/></svg> </label> <div class=md-header__title data-md-component=header-title> <div class=md-header__ellipsis> <div class=md-header__topic> <span class=md-ellipsis> LinuxServer.io </span> </div> <div class=md-header__topic data-md-component=header-topic> <span class=md-ellipsis> Split dns </span> </div> </div> </div> <form class=md-header__option data-md-component=palette> <input class=md-option data-md-color-media="(prefers-color-scheme: light)" data-md-color-scheme=default data-md-color-primary=purple data-md-color-accent=indigo aria-label="Switch to dark mode" type=radio name=__palette id=__palette_0> <label class="md-header__button md-icon" title="Switch to dark mode" for=__palette_1 hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 8a4 4 0 0 0-4 4 4 4 0 0 0 4 4 4 4 0 0 0 4-4 4 4 0 0 0-4-4m0 10a6 6 0 0 1-6-6 6 6 0 0 1 6-6 6 6 0 0 1 6 6 6 6 0 0 1-6 6m8-9.31V4h-4.69L12 .69 8.69 4H4v4.69L.69 12 4 15.31V20h4.69L12 23.31 15.31 20H20v-4.69L23.31 12 20 8.69Z"/></svg> </label> <input class=md-option data-md-color-media="(prefers-color-scheme: dark)" data-md-color-scheme=slate data-md-color-primary=purple data-md-color-accent=indigo aria-label="Switch to light mode" type=radio name=__palette id=__palette_1> <label class="md-header__button md-icon" title="Switch to light mode" for=__palette_0 hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 18c-.89 0-1.74-.2-2.5-.55C11.56 16.5 13 14.42 13 12c0-2.42-1.44-4.5-3.5-5.45C10.26 6.2 11.11 6 12 6a6 6 0 0 1 6 6 6 6 0 0 1-6 6m8-9.31V4h-4.69L12 .69 8.69 4H4v4.69L.69 12 4 15.31V20h4.69L12 23.31 15.31 20H20v-4.69L23.31 12 20 8.69Z"/></svg> </label> </form> <script>var media,input,key,value,palette=__md_get("__palette");if(palette&&palette.color){"(prefers-color-scheme)"===palette.color.media&&(media=matchMedia("(prefers-color-scheme: light)"
</span></code></pre></div> <h3 id=adguardhome>AdguardHome<a class=headerlink href=#adguardhome title="Permanent link">&para;</a></h3> <p>Navigate to Filters &gt; DNS rewrites &gt; Add DNS rewrite:</p> <ul> <li>Domain name: <code>*.domain.com</code></li> <li>IP Address: <code>10.10.10.10</code></li> </ul> <h2 id=wireguard-issues>Wireguard Issues<a class=headerlink href=#wireguard-issues title="Permanent link">&para;</a></h2> <p>When exposing a wireguard server, the wireguard subdomain should not be split or it will break the connection while roaming between wi-fi and mobile data.</p> <p>For example, you can exclude <code>wg.domain.com</code> on AdguardHome by creating another DNS rewrite of <code>wg.domain.com</code> to <code>wg.domain.com</code>, that will exclude it from the split.</p> <h2 id=nat-reflection-nat-loopback-hairpin-nat>NAT Reflection / NAT Loopback / Hairpin NAT<a class=headerlink href=#nat-reflection-nat-loopback-hairpin-nat title="Permanent link">&para;</a></h2> <p>NAT reflection is an alternative option to split DNS, which can provide some but not all of the same same benefits, it allows LAN devices to use the external IP and get port-forwarded without being NAT'd. </p> <p>It's usually a setting on specific routers that can be enabled via a checkbox.</p> <p>Note that using Cloudflare proxy (the orange cloud) or Cloudflare tunnels will bypass it and still send traffic externally.</p> <h2 id=neither>Neither<a class=headerlink href=#neither title="Permanent link">&para;</a></h2> <p>Without split DNS or NAT reflection traffic goes out of your router to reach your external IP and then gets NAT'd back in, often getting blocked by the router since external traffic with a LAN IP source is seen as malicious.</p> <aside class=md-source-file> <span class=md-source-file__fact> <span class=md-icon title="Last update"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M21 13.1c-.1 0-.3.1-.4.2l-1 1 2.1 2.1 1-1c.2-.2.2-.6 0-.8l-1.3-1.3c-.1-.1-.2-.2-.4-.2m-1.9 1.8-6.1 6V23h2.1l6.1-6.1-2.1-2M12.5 7v5.2l4 2.4-1 1L11 13V7h1.5M11 21.9c-5.1-.5-9-4.8-9-9.9C2 6.5 6.5 2 12 2c5.3 0 9.6 4.1 10 9.3-.3-.1-.6-.2-1-.2s-.7.1-1 .2C19.6 7.2 16.2 4 12 4c-4.4 0-8 3.6-8 8 0 4.1 3.1 7.5 7.1 7.9l-.1.2v1.8Z"/></svg> </span> <span class="git-revision-date-localized-plugin git-revision-date-localized-plugin-date">April 19, 2024</span> </span> <span class=md-source-file__fact> <span class=md-icon title=Created> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M14.47 15.08 11 13V7h1.5v5.25l3.08 1.83c-.41.28-.79.62-1.11 1m-1.39 4.84c-.36.05-.71.08-1.08.08-4.42 0-8-3.58-8-8s3.58-8 8-8 8 3.58 8 8c0 .37-.03.72-.08 1.08.69.1 1.33.32 1.92.64.1-.56.16-1.13.16-1.72 0-5.5-4.5-10-10-10S2 6.5 2 12s4.47 10 10 10c.59 0 1.16-.06 1.72-.16-.32-.59-.54-1.23-.64-1.92M18 15v3h-3v2h3v3h2v-3h3v-2h-3v-3h-2Z"/></svg> </span> <span class="git-revision-date-localized-plugin git-revision-date-localized-plugin-date">April 19, 2024</span> </span> </aside> </article> </div> <script>var target=document.getElementById(location.hash.slice(1));target&&target.name&&(target.checked=target.name.startsWith("__tabbed_"))</script> </div> <button type=button class="md-top md-icon" data-md-component=top hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M13 20h-2V8l-5.5 5.5-1.42-1.42L12 4.16l7.92 7.92-1.42 1.42L13 8v12Z"/></svg> Back to top </button> </main> <footer class=md-footer> <nav class="md-footer__inner md-grid" aria-label=Footer> <a href=../how-to-get-support/ class="md-footer__link md-footer__link--prev" aria-label="Previous: How to get support"> <div class="md-footer__button md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12Z"/></svg> </div> <div class=md-footer__title> <span class=md-footer__direction> Previous </span> <div class=md-ellipsis> How to get support </div> </div> </a> <a href=../../images/docker-adguardhome-sync/ class="md-footer__link md-footer__link--next" aria-label="Next: adguardhome-sync"> <div class=md-footer__
Deployed bc13df7a with MkDocs version: 1.6.0 2024-04-29 11:49:45 +00:00			<!doctype html><html lang=en class=no-js> <head><meta charset=utf-8><meta name=viewport content="width=device-width,initial-scale=1"><meta name=description content="Welcome to the home of the LinuxServer.io documentation!"><meta name=author content=LinuxServer.io><link href=https://docs.linuxserver.io/general/split-dns/ rel=canonical><link href=../how-to-get-support/ rel=prev><link href=../../images/docker-adguardhome-sync/ rel=next><link rel=icon href=../../assets/favicon.ico><meta name=generator content="mkdocs-1.6.0, mkdocs-material-9.5.19"><title>Split dns - LinuxServer.io</title><link rel=stylesheet href=../../assets/stylesheets/main.66ac8b77.min.css><link rel=stylesheet href=../../assets/stylesheets/palette.06af60db.min.css><link rel=preconnect href=https://fonts.gstatic.com crossorigin><link rel=stylesheet href="https://fonts.googleapis.com/css?family=Roboto:300,300i,400,400i,700,700i%7CRoboto+Mono:400,400i,700,700i&display=fallback"><style>:root{--md-text-font:"Roboto";--md-code-font:"Roboto Mono"}</style><script>__md_scope=new URL("../..",location),__md_hash=e=>[...e].reduce((e,_)=>(e<<5)-e+_.charCodeAt(0),0),__md_get=(e,_=localStorage,t=__md_scope)=>JSON.parse(_.getItem(t.pathname+"."+e)),__md_set=(e,_,t=localStorage,a=__md_scope)=>{try{t.setItem(a.pathname+"."+e,JSON.stringify(_))}catch(e){}}</script></head> <body dir=ltr data-md-color-scheme=default data-md-color-primary=purple data-md-color-accent=indigo> <input class=md-toggle data-md-toggle=drawer type=checkbox id=__drawer autocomplete=off> <input class=md-toggle data-md-toggle=search type=checkbox id=__search autocomplete=off> <label class=md-overlay for=__drawer></label> <div data-md-component=skip> <a href=#split-dns class=md-skip> Skip to content </a> </div> <div data-md-component=announce> </div> <header class=md-header data-md-component=header> <nav class="md-header__inner md-grid" aria-label=Header> <a href=../.. title=LinuxServer.io class="md-header__button md-logo" aria-label=LinuxServer.io data-md-component=logo> <img src=../../assets/icon.svg alt=logo> </a> <label class="md-header__button md-icon" for=__drawer> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M3 6h18v2H3V6m0 5h18v2H3v-2m0 5h18v2H3v-2Z"/></svg> </label> <div class=md-header__title data-md-component=header-title> <div class=md-header__ellipsis> <div class=md-header__topic> <span class=md-ellipsis> LinuxServer.io </span> </div> <div class=md-header__topic data-md-component=header-topic> <span class=md-ellipsis> Split dns </span> </div> </div> </div> <form class=md-header__option data-md-component=palette> <input class=md-option data-md-color-media="(prefers-color-scheme: light)" data-md-color-scheme=default data-md-color-primary=purple data-md-color-accent=indigo aria-label="Switch to dark mode" type=radio name=__palette id=__palette_0> <label class="md-header__button md-icon" title="Switch to dark mode" for=__palette_1 hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 8a4 4 0 0 0-4 4 4 4 0 0 0 4 4 4 4 0 0 0 4-4 4 4 0 0 0-4-4m0 10a6 6 0 0 1-6-6 6 6 0 0 1 6-6 6 6 0 0 1 6 6 6 6 0 0 1-6 6m8-9.31V4h-4.69L12 .69 8.69 4H4v4.69L.69 12 4 15.31V20h4.69L12 23.31 15.31 20H20v-4.69L23.31 12 20 8.69Z"/></svg> </label> <input class=md-option data-md-color-media="(prefers-color-scheme: dark)" data-md-color-scheme=slate data-md-color-primary=purple data-md-color-accent=indigo aria-label="Switch to light mode" type=radio name=__palette id=__palette_1> <label class="md-header__button md-icon" title="Switch to light mode" for=__palette_0 hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M12 18c-.89 0-1.74-.2-2.5-.55C11.56 16.5 13 14.42 13 12c0-2.42-1.44-4.5-3.5-5.45C10.26 6.2 11.11 6 12 6a6 6 0 0 1 6 6 6 6 0 0 1-6 6m8-9.31V4h-4.69L12 .69 8.69 4H4v4.69L.69 12 4 15.31V20h4.69L12 23.31 15.31 20H20v-4.69L23.31 12 20 8.69Z"/></svg> </label> </form> <script>var media,input,key,value,palette=__md_get("__palette");if(palette&&palette.color){"(prefers-color-scheme)"===palette.color.media&&(media=matchMedia("(prefers-color-scheme: light)"
			</span></code></pre></div> <h3 id=adguardhome>AdguardHome<a class=headerlink href=#adguardhome title="Permanent link">¶</a></h3> <p>Navigate to Filters > DNS rewrites > Add DNS rewrite:</p> <ul> <li>Domain name: <code>*.domain.com</code></li> <li>IP Address: <code>10.10.10.10</code></li> </ul> <h2 id=wireguard-issues>Wireguard Issues<a class=headerlink href=#wireguard-issues title="Permanent link">¶</a></h2> <p>When exposing a wireguard server, the wireguard subdomain should not be split or it will break the connection while roaming between wi-fi and mobile data.</p> <p>For example, you can exclude <code>wg.domain.com</code> on AdguardHome by creating another DNS rewrite of <code>wg.domain.com</code> to <code>wg.domain.com</code>, that will exclude it from the split.</p> <h2 id=nat-reflection-nat-loopback-hairpin-nat>NAT Reflection / NAT Loopback / Hairpin NAT<a class=headerlink href=#nat-reflection-nat-loopback-hairpin-nat title="Permanent link">¶</a></h2> <p>NAT reflection is an alternative option to split DNS, which can provide some but not all of the same same benefits, it allows LAN devices to use the external IP and get port-forwarded without being NAT'd. </p> <p>It's usually a setting on specific routers that can be enabled via a checkbox.</p> <p>Note that using Cloudflare proxy (the orange cloud) or Cloudflare tunnels will bypass it and still send traffic externally.</p> <h2 id=neither>Neither<a class=headerlink href=#neither title="Permanent link">¶</a></h2> <p>Without split DNS or NAT reflection traffic goes out of your router to reach your external IP and then gets NAT'd back in, often getting blocked by the router since external traffic with a LAN IP source is seen as malicious.</p> <aside class=md-source-file> <span class=md-source-file__fact> <span class=md-icon title="Last update"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M21 13.1c-.1 0-.3.1-.4.2l-1 1 2.1 2.1 1-1c.2-.2.2-.6 0-.8l-1.3-1.3c-.1-.1-.2-.2-.4-.2m-1.9 1.8-6.1 6V23h2.1l6.1-6.1-2.1-2M12.5 7v5.2l4 2.4-1 1L11 13V7h1.5M11 21.9c-5.1-.5-9-4.8-9-9.9C2 6.5 6.5 2 12 2c5.3 0 9.6 4.1 10 9.3-.3-.1-.6-.2-1-.2s-.7.1-1 .2C19.6 7.2 16.2 4 12 4c-4.4 0-8 3.6-8 8 0 4.1 3.1 7.5 7.1 7.9l-.1.2v1.8Z"/></svg> </span> <span class="git-revision-date-localized-plugin git-revision-date-localized-plugin-date">April 19, 2024</span> </span> <span class=md-source-file__fact> <span class=md-icon title=Created> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M14.47 15.08 11 13V7h1.5v5.25l3.08 1.83c-.41.28-.79.62-1.11 1m-1.39 4.84c-.36.05-.71.08-1.08.08-4.42 0-8-3.58-8-8s3.58-8 8-8 8 3.58 8 8c0 .37-.03.72-.08 1.08.69.1 1.33.32 1.92.64.1-.56.16-1.13.16-1.72 0-5.5-4.5-10-10-10S2 6.5 2 12s4.47 10 10 10c.59 0 1.16-.06 1.72-.16-.32-.59-.54-1.23-.64-1.92M18 15v3h-3v2h3v3h2v-3h3v-2h-3v-3h-2Z"/></svg> </span> <span class="git-revision-date-localized-plugin git-revision-date-localized-plugin-date">April 19, 2024</span> </span> </aside> </article> </div> <script>var target=document.getElementById(location.hash.slice(1));target&&target.name&&(target.checked=target.name.startsWith("__tabbed_"))</script> </div> <button type=button class="md-top md-icon" data-md-component=top hidden> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M13 20h-2V8l-5.5 5.5-1.42-1.42L12 4.16l7.92 7.92-1.42 1.42L13 8v12Z"/></svg> Back to top </button> </main> <footer class=md-footer> <nav class="md-footer__inner md-grid" aria-label=Footer> <a href=../how-to-get-support/ class="md-footer__link md-footer__link--prev" aria-label="Previous: How to get support"> <div class="md-footer__button md-icon"> <svg xmlns=http://www.w3.org/2000/svg viewbox="0 0 24 24"><path d="M20 11v2H8l5.5 5.5-1.42 1.42L4.16 12l7.92-7.92L13.5 5.5 8 11h12Z"/></svg> </div> <div class=md-footer__title> <span class=md-footer__direction> Previous </span> <div class=md-ellipsis> How to get support </div> </div> </a> <a href=../../images/docker-adguardhome-sync/ class="md-footer__link md-footer__link--next" aria-label="Next: adguardhome-sync"> <div class=md-footer__