OK...i found the problem...on the small mac 10/100 the loopback seems disabled Anyway...this the debug trace of a ping on u-boot consolle... Thanx in advance for any help Reseting TSE & SGDMAs Configuring PHY Link is up Duplex mode=1 PHY Speed is 100Mbit Configuring tx desc Configuring rx desc Starting rx sgdma SGDMA DEBUG : desc->source : 0x0 desc->destination : 0x10fe3f40 desc->next : 0x10fa01c0 desc->source_pad : 0x0 desc->destination_pad : 0x0 desc->next_pad : 0x0 desc->bytes_to_transfer : 0x0 desc->actual_bytes_transferred : 0x0 desc->descriptor_status : 0x0 desc->descriptor_control : 0x80 Configuring TSE Mac Adjusting TSE to link speed speed:100 100Mbit/s tse_eth_init returned 0 Using ALTERA_TSE-0 device TX Packet @ 0xd0fe3940,0x2a bytessending packet SGDMA DEBUG : desc->source : 0x10fe3940 desc->destination : 0x0 desc->next : 0x10fa0180 desc->source_pad : 0x0 desc->destination_pad : 0x0 desc->next_pad : 0x0 desc->bytes_to_transfer : 0x2a desc->actual_bytes_transferred : 0x0 desc->descriptor_status : 0x0 desc->descriptor_control : 0x85 next desc in sgdma 0x10fa0160 wait for sgdma....done tx sgdma status before clear run= 0x8 tx sgdma status = 0x18sent 0 bytes TX Packet @ 0xd0fe3940,0x2a bytessending packet SGDMA DEBUG : desc->source : 0x10fe3940 desc->destination : 0x0 desc->next : 0x10fa0180 desc->source_pad : 0x0 desc->destination_pad : 0x0 desc->next_pad : 0x0 desc->bytes_to_transfer : 0x2a desc->actual_bytes_transferred : 0x0 desc->descriptor_status : 0x0 desc->descriptor_control : 0x85 next desc in sgdma 0x10fa0160 wait for sgdma....done tx sgdma status before clear run= 0x8 tx sgdma status = 0x18sent 0 bytes