Comment 15 for bug 50214

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Witold Krakowski (wkrakowski-gmail) wrote :

It seems that this problem is actually caused by wireless-tools version 28 that supports Wireless Extension up to version 20, but ubuntu kernel and wireless drivers are compiled with Wireless Extension v21, which will be completely supported only from the next wireless-tools - v29.
I tried previous K(Ubuntu) versions and everything worked correctly, but iwconfig --version showed that there was no mismatch between Wireless Extensions version and Wireless tools version. (See also bug #91009)