Problem with the ROAM wpa_cli command and external scans.

Ben Greear greearb at
Wed Jul 8 18:59:00 EDT 2015

Previously (or so I believe), I could request a scan using 'iw', and then
tell wpa_cli to do a roam now than the scan is fresh.  I let user specify
the channels to scan with iw so that I can minimize scan time..which is a big help
when doing lots of virtual stations.

But, now it seems wpa_supplicant ignores these external scans.

Is there a better way to fix this other than to just hack wpa_supplicant
to have an override that allows it to use external scan results?

1436395475.329812: nl80211: Event message available
1436395475.329858: nl80211: Drv Event 33 (NL80211_CMD_TRIGGER_SCAN) received for sta100
1436395475.329875: sta100: nl80211: Scan trigger
1436395475.329888: sta100: Event SCAN_STARTED (47) received
1436395475.329901: sta100: External program started a scan
1436395475.359732: RTM_NEWLINK: ifi_index=10 ifname=sta100 wext ifi_family=0 ifi_flags=0x1003 ([UP])
1436395475.359792: nl80211: Event message available
1436395475.359815: nl80211: Drv Event 34 (NL80211_CMD_NEW_SCAN_RESULTS) received for sta100
1436395475.359831: sta100: nl80211: New scan results available
1436395475.359839: nl80211: Scan probed for SSID ''
1436395475.359864: nl80211: Scan included frequencies: 5180
1436395475.359872: sta100: Event SCAN_RESULTS (3) received
1436395475.359882: sta100: Scan completed in 0.029981 seconds
1436395475.359961: nl80211: Received scan results (5 BSSes)
1436395475.360053: sta100: BSS: Start scan result update 10
1436395475.360075: BSS: last_scan_res_used=5/32
1436395475.360084: sta100: New scan results available (own=0 ext=1)
1436395475.360099: sta100: Do not use results from externally requested scan operation for network selection
1436395477.423911: sta100: Control interface command 'ROAM 04:F0:21:98:D2:34'
1436395477.423949: CTRL_IFACE ROAM 04:f0:21:98:d2:34
1436395477.423958: CTRL_IFACE ROAM: No network configuration known for the target AP


Ben Greear <greearb at>
Candela Technologies Inc

More information about the HostAP mailing list