Hi folks - iwl3945 is associated on the wlan0 interface, and a second interface mon0 is created and put into monitor mode like this echo -n mon0 >/sys/class/ieee80211/phy0/add_iface iwconfig mon0 mode monitor ifconfig mon0 up iwconfig mon0 channel 6 tcpdump reports things going on # tcpdump -i mon0 tcpdump: WARNING: mon0: no IPv4 address assigned tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on mon0, link-type IEEE802_11_RADIO (802.11 plus BSD radio information header), capture size 96 bytes 11:46:04.512476 5.5 Mb/s 2437 MHz (0x0480) 220dB signal Beacon (froh) [1.0* 2.0* 5.5* 11.0* Mbit] ESS CH: 6, PRIVACY 11:46:04.614885 5.5 Mb/s 2437 MHz (0x0480) 220dB signal Beacon (froh) [1.0* 2.0* 5.5* 11.0* Mbit] ESS CH: 6, PRIVACY 11:46:04.717285 5.5 Mb/s 2437 MHz (0x0480) 220dB signal Beacon (froh) [1.0* 2.0* 5.5* 11.0* Mbit] ESS CH: 6, PRIVACY ... Setting IFF_PROMISC on wlan0 or mon0 did not help. If I remove the iwl3945 module, kill wpa_supplicant and dhclient. and reinsert it, and set the only interface wlan0 to monitor mode, I see a more genuine view of what is out there. # tcpdump -i wlan0 tcpdump: WARNING: wlan0: no IPv4 address assigned tcpdump: verbose output suppressed, use -v or -vv for full protocol decode listening on wlan0, link-type IEEE802_11_RADIO (802.11 plus BSD radio information header), capture size 96 bytes 11:50:18.364596 587219133us tsft 1.0 Mb/s 6 MHz (0x00a0) 0dB signal 0dB noise antenna 2 Beacon (froh) [1.0* 2.0* 5.5* 11.0* Mbit] ESS CH: 6, PRIVACY 11:50:18.378049 587205672us tsft short preamble 5.5 Mb/s 6 MHz (0x00a0) 0dB signal 0dB noise antenna 2 13:22:33:44:55:66 (oui Unknown) Unknown SSAP 0x60 > 13:22:33:44:55:66 (oui Unknown) Unknown DSAP 0x50 Unnumbered, ua, Flags [Response], length 77 11:50:18.466993 603996348us tsft 1.0 Mb/s 6 MHz (0x00a0) 0dB signal 0dB noise antenna 2 Beacon (froh) [1.0* 2.0* 5.5* 11.0* Mbit] ESS CH: 6, PRIVACY 11:50:18.476051 603987283us tsft short preamble 2.0 Mb/s 6 MHz (0x00a0) 0dB signal 0dB noise antenna 2 13:22:33:44:55:66 (oui Unknown) Unknown SSAP 0x60 > 13:22:33:44:55:66 (oui Unknown) Unknown DSAP 0x50 Unnumbered, ua, Flags [Response], length 77 11:50:18.569394 620773564us tsft 1.0 Mb/s 6 MHz (0x00a0) 0dB signal 0dB noise antenna 2 Beacon (froh) [1.0* 2.0* 5.5* 11.0* Mbit] ESS CH: 6, PRIVACY 11:50:18.576754 620766193us tsft 1.0 Mb/s 6 MHz (0x00a0) 0dB signal 0dB noise antenna 2 13:22:33:44:55:66 (oui Unknown) Unknown SSAP 0x60 > 13:22:33:44:55:66 (oui Unknown) Unknown DSAP 0x50 Unnumbered, ua, Flags [Response], length 77 11:50:18.671802 637550779us tsft 1.0 Mb/s 6 MHz (0x00a0) 0dB signal 0dB noise antenna 2 Beacon (froh) [1.0* 2.0* 5.5* 11.0* Mbit] ESS CH: 6, PRIVACY 11:50:18.675912 637546653us tsft 54.0 Mb/s 6 MHz (0x00c0) 0dB signal 0dB noise antenna 2 13:22:33:44:55:66 (oui Unknown) Unknown SSAP 0x60 > 13:22:33:44:55:66 (oui Unknown) Unknown DSAP 0x50 Unnumbered, ua, Flags [Response], length 77 This is the same situation as with zd1211rw after Ulrich's fix... if you are the only virtual interface, monitor mode works properly... it would really be beneficial if monitor mode acted consistently regardless of the number of virtual interfaces. -Andy - To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
