[lwip-devel] why the board sends Gratuitous ARP always?

[fangcheng_gmail]

I'm try to implement LWIP on a board based on the MCU MPC5604E from
Freescale.

I set the IPv4 address to 169.254.1.60 manually (not by DHCP or AUTOIP),
the board direct connects to one PC with IP address 169.254.1.20. (Network
gateway is 169.254.1.1)

After each power on reset, the boards always sends gratuitous ARP
continuously.

The attached picture shows this condition.

What's wrong?


Best regards,

Cheng Fang

ARP.png
Description: PNG image