Currently, rest_router sends ARP reply messages composing own MAC
address in Target MAC Address, and both Sender/Target MAC address
are MAC address of rest_router.
So, with this reply messages, Wireshark will report "Duplicate IP
address detected".
This patch fixes this problem.
This problem was reported by China Shenzhen TICOMM Information
Technology Co. Ltd.
Signed-off-by: IWASE Yusuke <iwase.yusuke0@gmail.com>
Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>