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I want to find out the duplex mode / speed of an etherenet interface or a bridge interface. And I want to change them also. I can not use tools like ethtool
or mii
because my system does not have a such tools and I can not install them.
Are there a solution for that (like using /proc)?
If you really can't install ethtool, only think left to do is to read sources of ethtool and do some c-programming on your own. I'd recommend that you install ethtool (either a package using package manager of your choice or compile if from sources), because anything else just makes things more laborous. – Sami Laine – 2014-08-01T08:42:42.137