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Date: Thu, 21 Feb 2013 14:29:20 +0100
Subject: Can't use 11n mode on my iwn wireless device
From: "Dominik Wille" <dominikwille@zedat.fu-berlin.de>
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Good Day,

I bought an Intel Wireless WiFi Link 4965 Device to get faster WLAN in
FreeBSD. But I don't get the Device working in 11n mode. My ifconfig
output:

$ ifconfig
em0: flags=8c02<BROADCAST,OACTIVE,SIMPLEX,MULTICAST> metric 0 mtu 1500
        options=4219b<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,VLAN_HWCSUM,TSO4,WOL_MAGIC,VLAN_HWTSO>
        ether 00:1a:6b:d2:44:4a
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: Ethernet autoselect
        status: no carrier
iwn0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 2290
        ether 00:21:5c:02:eb:f7
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: IEEE 802.11 Wireless Ethernet autoselect mode 11ng
        status: associated
lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> metric 0 mtu 16384
        options=600003<RXCSUM,TXCSUM,RXCSUM_IPV6,TXCSUM_IPV6>
        inet6 ::1 prefixlen 128
        inet6 fe80::1%lo0 prefixlen 64 scopeid 0xa
        inet 127.0.0.1 netmask 0xff000000
        nd6 options=21<PERFORMNUD,AUTO_LINKLOCAL>
wlan0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu 1500
        ether 00:21:5c:02:eb:f7
        inet 192.168.178.76 netmask 0xffffff00 broadcast 192.168.178.255
        nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>
        media: IEEE 802.11 Wireless Ethernet OFDM/54Mbps mode 11ng
        status: associated
        ssid new_myhome channel 4 (2427 MHz 11g ht/20) bssid
f4:ec:38:e9:6a:f6
        country US authmode WPA2/802.11i privacy ON deftxkey UNDEF
        AES-CCM 2:128-bit txpower 15 bmiss 10 scanvalid 450 bgscan
        bgscanintvl 300 bgscanidle 250 roam:rssi 7 roam:rate 64 protmode CTS
        ampdulimit 64k ampdudensity 8 -amsdutx amsdurx shortgi wme
        roaming MANUAL
$

I already tried:

# wlandebug +11n
net.wlan.0.debug: 0x0 => 0x80000000<11n>

but it also didn't work. It would be great if you can give me advise to
get it working. Thanks for reading :D