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<span class="date">04 March</span> <span> / </span>
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<a href="https://github.com/changchichung" title="Posts by Eric Chang" rel="author">Eric Chang</a>
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<h1 class='entry-title'> [筆記] 設定ubuntu 18.04 的NetworkManager config 不要更改 /etc/resolv.conf</h1>
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<article>
<p>ubuntu 18.04 的 DNS 設定很煩</p>
<p>系統預設會用NetworkManager 去管理</p>
<p>然後NetworkManager 又很「靈活」的許多種修改 /etc/resolv.conf 的方式</p>
<p>之前都是很粗暴的停用 NetworkManager</p>
<p>但是用筆電的user 又需要用 NetworkManager 來管理無線網路</p>
<p>今天找了一下文件讓NetworkManager 可以執行,卻不會去異動 /etc/resolv.conf</p>
<p>主要參考這篇文件</p>
<p><a href="https://developer.gnome.org/NetworkManager/stable/NetworkManager.conf.html">https://developer.gnome.org/NetworkManager/stable/NetworkManager.conf.html</a></p>
<p>看一下 dns/rc-manager 這兩個部份</p>
<p>然後修改 /etc/NetworkManager/NetworkManager.conf</p>
<pre><code>[main]
plugins=ifupdown,keyfile
dns=none
rc-manager=unmanaged
[ifupdown]
managed=false
[device]
wifi.scan-rand-mac-address=no
</code></pre>
<p>主要就加入第三行和第四行</p>
<p>接著安裝 resolvconf 這個套件</p>
<pre><code>sudo apt install resolvconf
</code></pre>
<p>修改resolvconf 的config</p>
<pre><code>sudo vim /etc/resolvconf/resolv.conf.d/head
加入以下內容
nameserver 168.95.1.1
nameserver 8.8.8.8
</code></pre>
<p>然後重新啟動 NetworkManager 還有 resolvconf 或者重新開機</p>
<p>就可以用 resolvconf 來管理 /etc/resolv.conf</p>
<p>不會再發生DNS 被改成 127.0.0.53 這種怪東西了</p>
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