Linux Strange TCP/IP problem

Hi all,

I don't understand this problem...:confused::confused::confused::confused:

I compiled linux for my nios2 custom board (with MMU) and I'm able to run the kernel Image with ramfs...

The altera tse driver works well (at least, it seems)...I'm able to ping the pc connected via eth0.....

All the other protocols don't work...i tried telnet tftp ftp...the PC receive packets (sniffed with wireshark) but they seems to be discarded...really strange...there is no firewall..PC can communicate with other PC on the same LAN...

I suppose (but it seems strange to me too) an issue with TCP/IP stack on latest linux distribution ...

nios2-linux-20100621.tar

It is really urgent...any help/info will be very appreciated..

Thx

Carlo