https://wiki.mkcs.at/wikien/index.php?action=history&feed=atom&title=Linux_Networking 2026-05-03T19:48:42Z Revision history for this page on the wiki MediaWiki 1.39.12 https://wiki.mkcs.at/wikien/index.php?title=Linux_Networking&diff=254&oldid=prev 2019-09-02T06:01:16Z

<p>Initial creation: add address, gateway, forwarding</p> <p><b>New page</b></p><div>Some important commands and settings that are needed frequently.<br /> <br /> == Add IPv4/IPv6 address to interface ==<br /> <br /> In the past, &lt;code&gt;ifconfig&lt;/code&gt; was used to add ip addresses. Nowadays, the &lt;code&gt;ip&lt;/code&gt; command is used instead.<br /> <br /> ip [-6] a a &#039;&#039;address&#039;&#039; dev &#039;&#039;iface&#039;&#039;<br /> <br /> Examples:<br /> <br /> ip a a 10.0.0.1 dev enp2s0<br /> ip -6 a a fd40:cafe:affe:1234::1 dev enp0s3<br /> <br /> == Set default IPv6 gateway ==<br /> <br /> ip -6 r a &#039;&#039;gateway&#039;&#039; dev &#039;&#039;iface&#039;&#039;<br /> <br /> &#039;&#039;gateway&#039;&#039; &#039;&#039;&#039;must not&#039;&#039;&#039; be a link local address (that is one that starts with &quot;fe80&quot;)!<br /> <br /> == IPv6 forwarding ==<br /> <br /> Query:<br /> <br /> sysctl net.ipv6.conf.all.forwarding<br /> <br /> Or using procfs:<br /> <br /> cat /proc/sys/net/ipv6/conf/all/forwarding<br /> <br /> Activating:<br /> <br /> sysctl -w net.ipv6.conf.all.forwarding=1<br /> <br /> &#039;&#039;&#039;Remark:&#039;&#039;&#039; &quot;all&quot; can be substituted by any network interface on the system, for example, &lt;code&gt;cat /proc/sys/net/ipv6/conf/eth0/forwarding&lt;/code&gt; prints the value for interface &quot;eth0&quot;.<br /> <br /> [[Category:Linux]]</div>

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