Simple socket server example ---> unable to find working interfaces

Hello,

I started working with Altera Stratix 4 GX development board recently. I am trying to run the simple socket server example (nios 2 ethernet standard example - https://www.altera.com/support/support-resources/design-examples/intellectual-property/embedded/nios-ii/exm-net-std-de.tablet.html).

Reading from other posts I was able to build and compile it with static IP. I changed the BSP to disable DHCP. When I run it on the board, it seems not to recognize the Ethernet interface.

It says:

prepped 0 interfaces, initializing...

inet setup error: unable to find any working interfaces

panic: IP

dtrap - needs breakpoint

Can anyone give a hint to where should I look to debug this? Or what should I do?

Thank You,

Sud