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)