wpa_supplicant 0.7.2 dropping udp dhcp after WPA association on return of requests

Kelly Hogan kshogan
Mon Sep 13 09:43:19 PDT 2010

Hello,  Sorry if this is a re-post, Sent from a non-list email address previously.

We have been using wpa_supplicant to do wpa connections to standard APs.   Our latest build under openwrt backfire, we see dhcp requests failing to get a response.  We see the this on UBNT routerstations and UBNT Picos.  

An open ticket with openwrt exists at https://dev.openwrt.org/ticket/7917 as well

Were ready and willing to dive in to help identify where to look to at least determine if this is a wpa_supplicant issue, kernel issue, or something in between, but are not sure where to start.  Any help would be appreciated.

Setting a static IP to the bridge yields success and traffic flows fine.    We have tried udhcpc and dhcpcd and both time out.

Connecting to a hostapd AP we can see the dhcp requests on its ingress i/f, and see its response, but on the station side we only see the request leave.

Other stations (our macs) connect to the APs fine.

Is there any known issues or any ideas on how to resolve?

Thanks in advance...  Were stumped...

.conf file

				proto=WPA RSN
				pairwise=CCMP TKIP
				group=CCMP TKIP

Interface status:

ath11     IEEE 802.11g  ESSID:"SunLife"  
         Mode:Managed  Frequency:2.437 GHz  Access Point: 00:11:95:56:64:69   
         Bit Rate:9 Mb/s   Tx-Power=18 dBm   
         RTS thr:off   Fragment thr:off
         Encryption key:8140-9CAE-DD9A-5E81-D433-1030-4067-F078   Security mode:restricted
         Power Management:off
         Link Quality=76/70  Signal level=-20 dBm  Noise level=-96 dBm
         Rx invalid nwid:17941  Rx invalid crypt:0  Rx invalid frag:0
         Tx excessive retries:0  Invalid misc:0   Missed beacon:0

Bridge Status:

bridge name	bridge id		STP enabled	interfaces
br0		8000.000000000000	no
br1		8000.00156dc12177	no		eth0
br-wan		8000.00156d65b075	no		ath11

udhcpc (v1.15.3) started
Sending discover...
Sending discover...
Sending discover...

{no IPs returned}

ping yahoo.com times out

{setting statics}
root at gw771022:/tmp# ifconfig br-wan netmask up

root at gw771022:/tmp# ping yahoo.com
PING yahoo.com ( 56 data bytes
64 bytes from seq=0 ttl=49 time=85.995 ms
64 bytes from seq=1 ttl=49 time=87.161 ms
64 bytes from seq=2 ttl=49 time=86.601 ms

No firewall exists

root at gw771022:/tmp# iptables -L
Chain INPUT (policy ACCEPT)
target     prot opt source               destination         

Chain FORWARD (policy ACCEPT)
target     prot opt source               destination         

Chain OUTPUT (policy ACCEPT)
target     prot opt source               destination         

-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.shmoo.com/pipermail/hostap/attachments/20100913/7e2dc455/attachment.htm 

More information about the Hostap mailing list