CHECKSUM BAD

sharan
Hi,

I have mini2440 in that after loading u-boot.bin  switching the board to
the NAND mode. From NAND mode i'm trying to install root file system using
Ethernet but when i use the command ping in the middle it's comming as
chucksum bad . what may be the reason for it ?
Please help asap thank you :).
 
MINI2440 ping 192.168.0.1
dm9000 i/o: 0x20000300, id: 0x90000a46 
DM9000: running in 16 bit mode
MAC: 08:08:11:18:12:27
## Warning: gatewayip needed but not set
checksum bad
checksum bad
## Warning: gatewayip needed but not set
host 192.168.0.1 is alive
MINI2440 # 

with regards
 Sharan