Pietro Cerutti wrote:
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Sam Leffler wrote:
| Matthias Apitz wrote:
|> Hello,
|>
|> I'm using WPA to connect to my various Wifi AP's (office, home,
partner
|> locations) and have them well configured in the wpa_supplicant.conf(5)
|> file;
|>
|> from time to time at home I encounter that it is associating with an
|> unknown AP of my neighbourhood:
|>
|>
|> # ifconfig iwi0
|> iwi0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> metric 0 mtu
|> 1500
|> ether 00:13:ce:a1:e6:81
|> inet 192.168.2.3 netmask 0xffffff00 broadcast 192.168.2.255
|> media: IEEE 802.11 Wireless Ethernet autoselect (DS/11Mbps)
|> status: associated
|> ssid o2DSL_kJaR channel 1 (2412 Mhz 11g) bssid
00:19:cb:86:b3:84
|> authmode OPEN privacy ON deftxkey 1 wepkey 1:40-bit bmiss 10
|> scanvalid 60 bgscan bgscanintvl 300 bgscanidle 250
roam:rssi11g 7
|> roam:rate11g 5 protmode CTS roaming MANUAL
|> # ifconfig iwi0 list scan
|> SSID BSSID CHAN RATE S:N INT CAPS
|> o2DSL_kJaR 00:19:cb:86:b3:84 1 54M 19:0 100 EP
|> xxxxxxxxxxxx 00:14:6c:44:aa:f6 11 54M 13:0 100 EP WPA
|>
|> the network with SSID 'o2DSL_kJaR' is not im my
|> /etc/wpa_supplicant.conf;
|>
|> how this is possible and how can I prevent this?
|>
| You must have a wildcard entry in your wpa_supplicant.conf file (i.e.
| one w/o an ssid specified).
Not necessarily. If you bring up a wlan interface and don't specify
anything, it will automatically associate with the first open AP it
finds.
I don't know if it's to be considered a feature or a bug. I've been
worried by this sometimes, but honestly not enough to really care..
Anyway, it happens...
He was talking about wpa_supplicant selecting an arbitrary AP. If you
have a device marked up then the system will handle ap selection+join
but if wpa_supplicant is running then it marks the interface in "manual
roaming mode" which stops that behaviour.
Sam
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