NetBSD Problem Report #49649
From bad@bsd.de Sat Feb 7 16:50:00 2015
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Message-Id: <20150207164927.6693438446@limiting-factor.k.bsd.de>
Date: Sat, 7 Feb 2015 17:49:27 +0100 (MET)
From: bad@bsd.de
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To: gnats-bugs@gnats.NetBSD.org
Subject: iwn(4) open/protected network association problems
X-Send-Pr-Version: 3.95
>Number: 49649
>Category: kern
>Synopsis: iwn(4) switching between ifconfig for open networks and wpa_supplicant for protected networks doesn't work
>Confidential: no
>Severity: serious
>Priority: medium
>Responsible: kern-bug-people
>State: open
>Class: sw-bug
>Submitter-Id: net
>Arrival-Date: Sat Feb 07 16:55:00 +0000 2015
>Originator: Christoph Badura
>Release: NetBSD 7.99.4
>Organization:
Bozotic Software Testing Labs
>Environment:
System: NetBSD size-isnt-everything 7.99.4 NetBSD 7.99.4 (GENERIC.201502020930Z) #0: Mon Feb 2 10:20:06 UTC 2015 snj@b45.netbsd.org:/home/builds/ab/HEAD/amd64/201502020930Z-obj/home/source/ab/HEAD/src/sys/arch/amd64/compile/GENERIC amd64
Architecture: x86_64
Machine: amd64
The same symptoms are present on:
NetBSD size-isnt-everything 6.1_STABLE NetBSD 6.1_STABLE (thinkpad-500) #4: Tue Feb 3 22:08:13 MET 2015 bad@size-isnt-everything:/u/0/trees/src/netbsd-6/sys/arch/amd64/compile/thinkpad-500 amd64
iwn0 at pci2 dev 0 function 0: vendor 8086 product 4236 (rev. 0x00)
iwn0: interrupting at ioapic0 pin 17
iwn0: MIMO 3T3R, MoW, address 00:21:6a:ab:62:48
iwn0: 11a rates: 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
iwn0: 11b rates: 1Mbps 2Mbps 5.5Mbps 11Mbps
iwn0: 11g rates: 1Mbps 2Mbps 5.5Mbps 11Mbps 6Mbps 9Mbps 12Mbps 18Mbps 24Mbps 36Mbps 48Mbps 54Mbps
>Description:
There is bad interaction between using ifconfig to connect to open Wi-Fi
networks and wpa_supplicant to connect to WPA-protected networks.
After having used a wpa_supplicant to connect to a WPA-protected network
I cannot use ifconfig to connect to unprotected networks. It seems there
are encryption keys still configured on the card. Using "ifconfig -nwkey"
seems to clear them. However, directly afterwards wpa_supplicant cannot
configure WPA.
I've never had this problem with ath(4) cards.
>How-To-Repeat:
# boot system.
ifconfig iwn0 ssid opennet up
# dhclient is able to obtain address
wpa_supplicant -i iwn0 -c protected.conf
# dhclient is able to obtain address
# stop wpa_supplicant with CTL-C
ifconfig iwn0 ssid opennet up
# dhclient cannot obtain address
ifconfig iwn0 -nwkey
# now dhclient can obtain address
wpa_supplicant -i iwn0 -c protected.conf
# now wpa_supplicant can't negotian WPA
wpa_supplicant -i iwn0 -c opennet.conf
# wpa_supplicant associates and dhclient can obtain address
wpa_supplicant -i iwn0 -c protected.conf
# now wpa_supplicant cann negociate WPA and dhclient can obtain address
opennet.conf:
sid="opennet"
scan_ssid=1
key_mgmt=NONE
}
protected.conf:
network={
ssid="wpaprotected"
scan_ssid=1
key_mgmt=WPA-PSK
psk="hogehogehoge"
}
>Fix:
A work around is to use wpa_supplicant to connect to open networks.
>Unformatted:
(Contact us)
$NetBSD: query-full-pr,v 1.39 2013/11/01 18:47:49 spz Exp $
$NetBSD: gnats_config.sh,v 1.8 2006/05/07 09:23:38 tsutsui Exp $
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