I"m new to BBB an this is my first post. I recently bought a BBB to install ntopng (http://www.ntop.org/) on it. Everything compiled well and ntopng is working properly accept with the eth0 Ethernet port. It is very strange because all it see is Spanning Tree broadcast and CDP paquets, and there is a lots of IP trafic on that cable coming from a network tap at 100Mbps. Very very strange. Everything is working fine with an external USB-to-Ethernet adapter (eth1) or on the usb0 port. Any ideas what is causing this ?