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Two MAC address for same eth? Davinci EMAC

Vincent 51111
Intellectual 590 points


Hello all,

i'm using davinci 6467 chip.

I found two MAC addresses assigned to same device during different boot phase.

After power on, the mac is(00:19:68:91:6d:92), named DigitalV in  wireshark. By this address, Tx and Rx both works well.

After tftp uimage download and uncompressing, it changed to 08:00:28:32:06:08, named TexasIns. Now, it seems only Tx works. because my nfs server can receive "DHCP discover" request and then sends "DHCP offer" back. But the board keeps sending "DHCP disvoer request".

it seems first one is coded in uboot. 2nd one is the real MAC address.

can someone confirm this and explain why two mac addresses are used here?

Thanks.

Wireshark log is attached.

wireshark.rar