Comment 58 for bug 495981

The networkmanager connects at my place to BSSID none. None does not exists, so the connection is lost and restarted again, and again and again.

The relevant log is:

<info> (wlan0): roamed from BSSID (none) ((none)) to 7C: (Zadel6)
wpa_supplicant[1076]: wlan0: WPA: Key negotiation completed with 7c: [PTK=CCMP GTK=TKIP]
wlan0: deauthenticated from 7c:(Reason: 15=4WAY_HANDSHAKE_TIMEOUT)
wpa_supplicant[1076]: message repeated 6 times: [ wlan0: WPA: Key negotiation completed with 7c:[PTK=CCMP GTK=TKIP]]
wpa_supplicant[1076]: wlan0: CTRL-EVENT-DISCONNECTED bssid=7c: reason=15
<warn> Connection disconnected (reason 15)

By chance I found the cause. My Cisco router

Firmware Version: epc3928a-E10-5-v302r125572-131030c-ZIG
MAC Address:
Current Time: Sat. Nov 22 11:42:30 2014
Router Mode: IPv4

has two bands 2,4 Ghz and 5Ghz, both with the same BSSID Zadel6.

In this situation the networkmanager is switching from BSSID Zadel6 to none, none to none and none to Zadel6.
If I disable one of the bands or give it a different BSSID, the switching disappears and the connection is not lost anymore.

If it correct to conclude that the networkmanager is getting confused by the two bands on the same BSSID?