service network restart
Shutting down interface eth0:                              [  OK  ]
Shutting down loopback interface:                          [  OK  ]
Bringing up loopback interface:                            [  OK  ]
Bringing up interface eth0:  
Determining IP information for eth0... done.
                                                           [  OK  ]
Bringing up interface eth1:  Error for wireless request "Set Mode" (8B06) :
    SET failed on device wifi0 ; Operation not supported.
Error for wireless request "Set Frequency" (8B04) :
    SET failed on device wifi0 ; Invalid argument.
Error for wireless request "Set Encode" (8B2A) :
    SET failed on device wifi0 ; Invalid argument.
Error for wireless request "Set ESSID" (8B1A) :
    SET failed on device wifi0 ; Invalid argument.

Determining IP information for wifi0... failed.
                                                           [FAILED]

--------------

[root@localhost ~]# iwconfig
lo        no wireless extensions.

eth0      no wireless extensions.

wifi0     IEEE 802.11-DS  Mode:Managed  
          Encryption key:off
          
wlan0     IEEE 802.11-DS  Mode:Managed  
          Encryption key:off
          Link Quality:0  Signal level:0  Noise level:0
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

sit0      no wireless extensions.