https://linux-kvm.org/api.php?action=feedcontributions&feedformat=atom&user=JdacKVM - User contributions [en]2026-05-01T15:29:15ZUser contributionsMediaWiki 1.39.5https://linux-kvm.org/index.php?title=Talk:Networking&diff=3098Talk:Networking2010-07-19T20:03:09Z<p>Jdac: </p>
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<div>In the section about running kvm as a non-root contains a setup that will not work. It says that one need to create a ''qemu-ifup'' script containing the line:<br />
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/usr/bin/sudo /usr/sbin/tunctl -u `whoami` -t $1<br />
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However, it will not work and result in an error-message when running ''qemu-system-x86_64''. The command above needs to be run before ''qemu-system-x86_64''.<br />
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I think this oneliner for generating a random MAC address is much more readable, and as an added bonus it will use the entire 16 bit space:<br />
printf "DE:AD:BE:EF:%02X:%02X\n" $((RANDOM&255)) $((RANDOM&255))<br />
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If you create the bridge manually ("brctl addbr br0") then you should also bring it up, with "ifconfig br0 up".</div>Jdac