[lwip-users] i don't konw why

[jack W]

hi every one  


    i have a problem about icmp.c 
  when i ping my board , useing ping 192.168.0.3 l -999 -t  , it failed  its 
debug info is 
"checksum failed for received ICMP echo."

but when i ping the board using ping 192.168.0.3 l -1000 -t . it successed

 i found that when the size of packet is odd bytes if fails  and when it si 
parity bytes it successes.

 why ?

thank you