i am a kali net hunter in android user. so how to fix ethtool fail.when i had open the monitor mode.

Last login: Fri Sep 9 05:25:34 UTC 2016 on pts/14
Linux kali 3.4.67 #1 SMP PREEMPT Fri Jan 23 19:00:23 CST 2015 armv7l

The programs included with the Kali GNU/Linux system are free software;
the exact distribution terms for each program are described in the
individual files in /usr/share/doc/*/copyright.

Kali GNU/Linux comes with ABSOLUTELY NO WARRANTY, to the extent
permitted by applicable law.
-bash: cannot set terminal process group (14560): Inappropriate ioctl for device
-bash: no job control in this shell
root@kali:~# wifite

  .;' `;,
 .;' ,;' `;, `;, WiFite v2 (r87)
.;' ,;' ,;' `;, `;, `;,
:: :: : ( ) : :: :: automated wireless auditor
':. ':. ':. /_\ ,:' ,:' ,:'
 ':. ':. /___\ ,:' ,:' designed for Linux
  ':. /_____\ ,:'
           / \

 [!] the program cowpatty is not required, but is recommended

 [+] scanning for wireless devices...
 [+] available wireless devices:
  1. ethtool failed...
  2. Only mac80211 devices on kernel 2.6.33 or higher are officially supported by airmon-ng.
 [+] select number of device to put into monitor mode (1-2):
[+] enabling monitor mode on ethtool failed..... done
 [+] available wireless devices:
  1. ethtool failed...
  2. Only mac80211 devices on kernel 2.6.33 or higher are officially supported by airmon-ng.
 [+] select number of device to put into monitor mode (1-2)