Problem: ngrep doesn't work on wireless internet in Windows NT

> ngrep -d 2
failed to set hardware filter to promiscuous mode: No error

Reason: Promiscuous mode doesn't work properly on Windows drivers for 802.11 adapters.

Resolution: turn off promiscuous mode by using -p option

> ngrep -d 2 -p
interface: \Device\NPF_{93DC214-B0E9-439-95ED-010360FAE}
#
T 222.122.84.200:80 -> 172.xx.xxx.xx:2711 [A]
  ection.nhn>..............</a></td></tr>..</tr>..<tr>..<td height=20></
  td>..<td><a href=/r/d?flash.hangame.com/ target=_blank>..........</a>
  &nbsp;<a href=/r/d?baduk.hangame.com/index.nhn target=_blank>....</a>