And I check from user log, I see this :
Mar 7 12:28:05 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=74:e5:0b:55:b4:4e role=PnG-employee/(null)
Mar 7 12:33:32 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=cc:af:78:a3:8e:fd role=PnG-employee/(null)
Mar 7 18:22:44 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=cc:af:78:a3:8e:fd role=PnG-employee/(null)
Mar 7 19:04:04 stm[23428]: <501074> <WARN> |stm| wifi_deauth_sta: bad data, dropping. mac: 20:64:32:4f:94:22 bssid: d8:c7:c8:75:f0:e0
Mar 7 23:45:45 authmgr[1552]: <522027> <WARN> |authmgr| MAC=b4:82:fe:d6:68:91 IP=10.133.10.50 IP Spoof from MAC=44:6d:57:4f:76:11 role=PnG-employee/(null)
Mar 8 11:28:47 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=74:e5:0b:55:b1:1c role=PnG-employee/(null)
Mar 8 12:24:16 KERNEL(L17_AP02@10.133.255.177): ath_bstuck_tasklet: Radio 0 stuck beacon; resetting (bmiss count 16)
Mar 8 12:33:05 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=74:e5:0b:55:b4:4e role=PnG-employee/(null)
Mar 8 12:47:36 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=cc:af:78:a3:8e:fd role=PnG-employee/(null)
Mar 8 19:03:01 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=cc:af:78:a3:8e:fd role=PnG-employee/(null)
Mar 11 04:10:35 KERNEL(L15_AP01@10.133.255.156): ath_bstuck_tasklet: Radio 0 stuck beacon; resetting (bmiss count 16)
Mar 11 11:47:51 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=74:e5:0b:55:b1:1c role=PnG-employee/(null)
Mar 11 12:44:03 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=cc:af:78:a3:8e:fd role=PnG-employee/(null)
Mar 11 18:24:34 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=cc:af:78:a3:8e:fd role=PnG-employee/(null)
Mar 11 21:29:04 KERNEL(L15_AP01@10.133.255.156): ath_bstuck_tasklet: Radio 0 stuck beacon; resetting (bmiss count 16)
Mar 12 11:48:54 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=74:e5:0b:55:b1:1c role=PnG-employee/(null)
Mar 12 12:30:28 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=74:e5:0b:55:b4:4e role=PnG-employee/(null)
Mar 12 12:40:20 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=cc:af:78:a3:8e:fd role=PnG-employee/(null)
Mar 12 15:47:41 stm[23428]: <501074> <WARN> |stm| wifi_deauth_sta: bad data, dropping. mac: 30:69:4b:5a:5e:09 bssid: d8:c7:c8:75:f0:e1
Mar 12 17:22:17 KERNEL(L15_AP01@10.133.255.156): ath_bstuck_tasklet: Radio 0 stuck beacon; resetting (bmiss count 16)
Mar 13 11:31:51 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=74:e5:0b:55:b1:1c role=PnG-employee/(null)
Mar 13 12:33:15 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=74:e5:0b:55:b4:4e role=PnG-employee/(null)
Mar 13 12:54:38 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=cc:af:78:a3:8e:fd role=PnG-employee/(null)
Mar 13 14:20:28 KERNEL(L15_AP01@10.133.255.156): ath_bstuck_tasklet: Radio 0 stuck beacon; resetting (bmiss count 16)
Mar 13 15:27:26 KERNEL(L16_AP03@10.133.255.168): ath_bstuck_tasklet: Radio 0 stuck beacon; resetting (bmiss count 16)
Mar 13 15:46:04 KERNEL(L15_AP03@10.133.255.158): ath_bstuck_tasklet: Radio 0 stuck beacon; resetting (bmiss count 16)
Mar 13 18:23:44 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:a2:62 IP=10.133.11.255 IP Spoof from MAC=cc:af:78:a3:8e:fd role=PnG-employee/(null)
Mar 13 18:35:55 KERNEL(L15_AP01@10.133.255.156): ath_bstuck_tasklet: Radio 0 stuck beacon; resetting (bmiss count 16)
Mar 13 18:40:19 KERNEL(L15_AP03@10.133.255.158): ath_bstuck_tasklet: Radio 0 stuck beacon; resetting (bmiss count 16)
Mar 13 19:39:01 KERNEL(L15_AP01@10.133.255.156): ath_bstuck_tasklet: Radio 0 stuck beacon; resetting (bmiss count 16)
Mar 13 22:14:14 KERNEL(L15_AP01@10.133.255.156): ath_bstuck_tasklet: Radio 0 stuck beacon; resetting (bmiss count 16)
Mar 14 12:32:07 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:b1:1c IP=10.133.11.255 IP Spoof from MAC=74:e5:0b:55:b4:4e role=PnG-employee/(null)
Mar 14 12:40:38 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:b1:1c IP=10.133.11.255 IP Spoof from MAC=cc:af:78:a3:8e:fd role=PnG-employee/(null)
Mar 14 12:52:09 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:b1:1c IP=10.133.11.255 IP Spoof from MAC=74:e5:0b:55:a2:62 role=PnG-employee/(null)
Mar 14 13:04:35 authmgr[1552]: <522027> <WARN> |authmgr| MAC=74:e5:0b:55:b1:1c IP=10.133.11.255 IP Spoof from MAC=cc:af:78:a3:8e:fd role=PnG-employee/(null)
Mar 14 17:28:45 KERNEL(L15_AP01@10.133.255.156): ath_bstuck_tasklet: Radio 0 stuck beacon; resetting (bmiss count 16)
How to solve this problem issue....