Ethernet port on Arduino Breakout for LinkIt Smart 7688 Duo

After update to the last firmware to be sure.

If I plug an ethernet cable in the ETH port of the breakout to connect it to my LAN… the ETH port is physicaly activated, but the interface is not visible in the web page, and under linux It has no DHCP client affected in ipV4.

ra0 Link encap:Ethernet HWaddr 9C:65:F9:1C:4D:29
inet6 addr: fe80::9e65:f9ff:fe1c:4d29/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:83220 errors:0 dropped:0 overruns:0 frame:0
TX packets:7222 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:20257151 (19.3 MiB) TX bytes:1833216 (1.7 MiB)
Interrupt:6

How can I activate it ?