https://www.0niu.cn/tags/ipv6/Recent content in IPv6 on HiDaHugo -- gohugo.iozhWed, 25 Oct 2023 00:17:48 +0800https://www.0niu.cn/posts/terra-master-nas-nic-enable-ipv6/Wed, 25 Oct 2023 00:17:48 +0800https://www.0niu.cn/posts/terra-master-nas-nic-enable-ipv6/<p>铁威马的系统配置和常见Linux系统配置不一样，搞了好半天。</p> <p>假设需要启用IPv6的网卡为<code>eth1</code></p> <p>编辑 <code>/etc/network</code> 添加或修改配置为：</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span><span style="color:#f92672">[</span>eth1<span style="color:#f92672">]</span> </span></span><span style="display:flex;"><span>SLAVE<span style="color:#f92672">=</span><span style="color:#ae81ff">0</span> </span></span><span style="display:flex;"><span>MTU<span style="color:#f92672">=</span><span style="color:#ae81ff">1500</span> </span></span><span style="display:flex;"><span>DHCP<span style="color:#f92672">=</span>YES </span></span><span style="display:flex;"><span>IPV6_CONF<span style="color:#f92672">=</span>auto </span></span><span style="display:flex;"><span>IPV6_DEFROUTE<span style="color:#f92672">=</span>yes </span></span><span style="display:flex;"><span>IPV6INIT<span style="color:#f92672">=</span>YES </span></span><span style="display:flex;"><span>MtuStatus<span style="color:#f92672">=</span><span style="color:#ae81ff">0</span> </span></span></code></pre></div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>echo <span style="color:#ae81ff">0</span> &gt; /proc/sys/net/ipv6/conf/eth1/disable_ipv6 </span></span></code></pre></div><p>DHCP 获取IP</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>killall -2 nasips </span></span></code></pre></div><p>铁威马的系统配置和常见Linux系统配置不一样，搞了好半天。</p> <p>假设需要启用IPv6的网卡为<code>eth1</code></p> <p>编辑 <code>/etc/network</code> 添加或修改配置为：</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span><span style="color:#f92672">[</span>eth1<span style="color:#f92672">]</span> </span></span><span style="display:flex;"><span>SLAVE<span style="color:#f92672">=</span><span style="color:#ae81ff">0</span> </span></span><span style="display:flex;"><span>MTU<span style="color:#f92672">=</span><span style="color:#ae81ff">1500</span> </span></span><span style="display:flex;"><span>DHCP<span style="color:#f92672">=</span>YES </span></span><span style="display:flex;"><span>IPV6_CONF<span style="color:#f92672">=</span>auto </span></span><span style="display:flex;"><span>IPV6_DEFROUTE<span style="color:#f92672">=</span>yes </span></span><span style="display:flex;"><span>IPV6INIT<span style="color:#f92672">=</span>YES </span></span><span style="display:flex;"><span>MtuStatus<span style="color:#f92672">=</span><span style="color:#ae81ff">0</span> </span></span></code></pre></div><div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>echo <span style="color:#ae81ff">0</span> &gt; /proc/sys/net/ipv6/conf/eth1/disable_ipv6 </span></span></code></pre></div><p>DHCP 获取IP</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>killall -2 nasips </span></span></code></pre></div>https://www.0niu.cn/posts/centos-ipv6-tentative-noprefixroute-dadfailed/Mon, 27 Jan 2020 15:53:10 +0800https://www.0niu.cn/posts/centos-ipv6-tentative-noprefixroute-dadfailed/<p>有几台CentOS7的虚拟机，都是克隆出来的，发现IPv6本地链路地址报tentative noprefixroute dadfailed，仔细对比IPv6 本地链路地址，都是一样的。<br> <img loading='lazy' src="https://cdn.hida.in/img/redhat/ipv6.png" alt="" /> <br> 问题是它是本地链路地址，没法删除，只能去查找资料。原来本地链路地址是NetworkManger通过secret_key得来的，而secret_key是通过machine_id得来的。克隆的时候把machine_id 一同复制过来了，所以导致本地链路地址一样。那么问题就好解决了。</p><p>有几台CentOS7的虚拟机，都是克隆出来的，发现IPv6本地链路地址报tentative noprefixroute dadfailed，仔细对比IPv6 本地链路地址，都是一样的。<br> <img loading='lazy' src="https://cdn.hida.in/img/redhat/ipv6.png" alt="" /> <br> 问题是它是本地链路地址，没法删除，只能去查找资料。原来本地链路地址是NetworkManger通过secret_key得来的，而secret_key是通过machine_id得来的。克隆的时候把machine_id 一同复制过来了，所以导致本地链路地址一样。那么问题就好解决了。</p> <div class="highlight"><pre tabindex="0" style="color:#f8f8f2;background-color:#272822;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-bash" data-lang="bash"><span style="display:flex;"><span>mv /etc/machine-id /etc/machine-id.bak </span></span><span style="display:flex;"><span>systemd-machine-id-setup </span></span><span style="display:flex;"><span>mv /var/lib/NetworkManager/secret_key /var/lib/NetworkManager/secret_key.bak </span></span><span style="display:flex;"><span>reboot </span></span></code></pre></div><p>参考资料</p> <ol> <li><a href="https://access.redhat.com/solutions/4356981">Cloned VM generate same IPv6 link local addresses as the original VM</a></li> <li><a href="https://access.redhat.com/solutions/3553581">ipv6 link local becomes tentative and dadfailed</a></li> </ol>