In my environment (Intel Centrino Advanced-N 6200), I got 'ifconfig wlan0 country JP' missed. # ifconfig wlan0 country JP ifconfig: SIOCS80211: Invalid argument And I got following failure message, too: Jul 21 00:13:18 pelsia kernel: iwn0: iwn_setregdomain: invalid channel 8 freq 2447/0x20480 I tried to modify /etc/regdomain.xml and tried to do ifconfig. So I found error setting at freqband 'H4_2412_2472' (only use in regdomain Japan). At least, this should be set <freqend>2466</freqend> instead of <freqend>2472</freqend>. However, maybe, this should be used 'H4_2412_2462'. Sorry, I couldn't find this reason that this should be 2412MHz-2472MHz and/or 2412MHz-2466MHz(2462MHz?). So I don't know my patch is right. How-To-Repeat: N/A
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The same problem was reported in bug #209328; it was revealed after base r221657 (enabled HT40 support in iwn(4)) and fixed in base r299264.