Re: Wireless cannot ping gateway after 6.3 CR updates

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On Wed, 2013-03-06 at 13:06 -0500, b.j. mcclure wrote:

> I'm having a wireless connection issue with an HP laptop and a Zotac
> media server after the 6.4 package updates from CR repository.  Nothing
> changed with wireless config as far as I can tell.  Both have been
> working fine with previous releases of 6.x.
> 
> Oddly, if a cat 5 cable is connected for a few seconds and then
> disconnected the wireless works fine and survives a 'service network
> restart' but does not survive a reboot.  A laptop running Ubuntu 12.04
> continues to connect normally.
> 
> The boxes in question appear to connect to the router/accesspoint, are
> assigned correct static IPs, but cannot ping any box on the intranet
> including the router.  No other boxes on the intranet can ping the hp or
> zotac, Once a network cable is inserted and removed all is well with
> that box. The zotac box uses the ath9k wireless driver, the HP uses b43.
> Same result using DHCP instead of static IP.
> 
> Output of iwconfig appears normal on both errant boxes and does not
> change from non-working to working state.
> 
> Google has not been much help.  FWIW, here is output of iwconfig and
> ifconfig.
> 
> ~]$ ifconfig
> eth0      Link encap:Ethernet  HWaddr 00:01:2E:BC:74:14  
>           inet6 addr: fe80::201:2eff:febc:7414/64 Scope:Link
>           UP BROADCAST MULTICAST  MTU:1500  Metric:1
>           RX packets:0 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:9 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000 
>           RX bytes:0 (0.0 b)  TX bytes:1249 (1.2 KiB)
> 
> lo        Link encap:Local Loopback  
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           inet6 addr: ::1/128 Scope:Host
>           UP LOOPBACK RUNNING  MTU:16436  Metric:1
>           RX packets:89 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:89 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:0 
>           RX bytes:8807 (8.6 KiB)  TX bytes:8807 (8.6 KiB)
> 
> wlan0     Link encap:Ethernet  HWaddr 74:F0:6D:8C:FE:CF  
>           inet addr:192.168.1.208  Bcast:192.168.1.255
> Mask:255.255.255.0
>           inet6 addr: fe80::76f0:6dff:fe8c:fecf/64 Scope:Link
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:732 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:79 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000 
>           RX bytes:107489 (104.9 KiB)  TX bytes:9217 (9.0 KiB)
> 
> [LSF@nra ~]$ iwconfig
> lo        no wireless extensions.
> 
> eth0      no wireless extensions.
> 
> wlan0     IEEE 802.11bgn  ESSID:"toadnet"  
>           Mode:Managed  Frequency:2.437 GHz  Access Point:
> 00:24:93:38:89:80   
>           Bit Rate=54 Mb/s   Tx-Power=15 dBm   
>           Retry  long limit:7   RTS thr:off   Fragment thr:off
>           Power Management:on
>           Link Quality=70/70  Signal level=-28 dBm  
>           Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
>           Tx excessive retries:0  Invalid misc:29   Missed beacon:0
> 
> Any thoughts appreciated.
> 
> B.J.
> 
> CentOS release 6.3 (Final) 


Replying to my own post, I forgot to mention I have tried several USB
wireless adapters on both boxes with same results as onboard adapter,
booted previous 2.6.32-279 kernel instead of 2.6.32-358 and disabled
Network Manager with no change in behavior.

B.J.



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