请教版主一个棘手的debian开机自动运行命令的问题

版主好！各位好！以下是我增加的在rc.local的内容
#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.
echo "testtestestesttestestesttestestesttestestesttestes"
echo "testtestestesttestestesttestestesttestestesttestes"
echo "testtestestesttestestesttestestesttestestesttestes"
echo "testtestestesttestestesttestestesttestestesttestes"
echo "testtestestesttestestesttestestesttestestesttestes"
echo "testtestestesttestestesttestestesttestestesttestes"
#cd /root
if `mount -t cifs -o username=administrator,password=asdf-123 //192.168.222.242/share /root/testmount` ;then
echo "the mount is ok!!!!"
else
echo "nonononoon!!"
fi
exit 0

我的目的是使每次开机后都自动mount上我的windows 共享文件夹，我在shell 命令行直接执行是可以的。但是自动启动就是出现以下错误提示，请版主和高手指点,谢谢！
错误提示：
【40.48951】 CIFS VFS : Error connecting ot Ipv4 sockcet. Aborting operation
[40.785288] CIFS VFS : cifs_mount failed w/return code =101
mount: Network is unreachable