DD3300 - error network interface

Hello everyone,

I'm configuring my DD as usually, I'm using 3 ports of 4, two for replication from another DD and I want to use the others for backup purpose. One of these interface won't give up, or better I obtain the network up but not running. 

When I setup the ip, I obtain that the autonegotation, duplex and speed couldn't be set.

But if I try to ping the interface it respond and I can login via web.

But, for example, I cannot configure the group in DDBOOST configuration or I cannot setup the virtual interface as failover for this interface.