wpa_supplicant v0.6.3 loses connection, then reconnects to a different AP

[David Ehrmann]

When my connection drops, wpa_supplicant 0.6.3 sometimes reconnects to
an AP on the same SSID, but with a different BSSID.  I thought that
specifying the BSSID would force that one to always be used.

Am I missing something?  Here's my config:

ctrl_interface=/var/run/wpa_supplicant

eapol_version=2
ap_scan=1

network={
         ssid="..."
         scan_ssid=1
         bssid=...
         key_mgmt=WPA-EAP
         pairwise=CCMP TKIP
         group=CCMP TKIP
         eap=PEAP TLS
         identity=...
         password=...
         phase2="auth=MSCHAPV2"
         priority=10
}