openwrt下面抓的包在电脑上无法识别

freewifi

在openwrt下面用aircrack-ng 抓的包，放到电脑上跑包时发现无法识别，op里面的也是aircrack-ng 1.1
错误信息如下
aircrack-ng.exe -w dict.txt 123.ivs
cygwin warning:
  MS-DOS style path detected: dict.txt
  Preferred POSIX equivalent is: dict.txt
  CYGWIN environment variable option "nodosfilewarning" turns off this warning.
  Consult the user's guide for more details about POSIX paths:
    http://cygwin.com/cygwin-ug-net/using.html#using-pathnames
Opening 123.ivs
Error, wrong ivs version: 256. Supported up to version 1.
Read 0 packets.

No networks found, exiting.

Quitting aircrack-ng...