EthernetDoesNotWork < DULG

%SECTION0{name=EthernetDoesNotWork}% Ethernet Does Not Work

   Question:: Ethernet does not work on my board.
   
   Answer:: Maybe you forgot to set a MAC address?
     Check if the ="ethaddr"= environment variable is defined,
     and if it has a sane value. If there are more than one Ethernet
     interfaces on your board, you may also have to check the MAC addresses for
     these, i. e. check the ="eth1addr"=, ="eth2addr"=, etc. variables, too.
   
   Question:: I have configured a MAC address
     of <filename>01:02:03:04:05:06</filename>, and I can see that an ARP
     packet is sent by U-Boot, and that an ARP reply is sent by the
     server, but U-Boot never receives any packets. What's wrong?

   Answer:: You have chosen a MAC address which, according to the ANSI/IEEE
     802-1990 standard, has the multicast bit set. Under normal conditions
     a network interface discards such packets, and this is what
     U-Boot is doing. This is not a bug, but correct behaviour.
     <p></p>                                                                                
     Please use only valid MAC addresses that were assigned to you.
     <p></p>
     For bring-up testing in the lab you can also use so-called
     _locally administered ethernet addresses_. These are addresses that
     have the 2nd LSB in the most significant byte of MAC address set.
     The _gen_eth_addr_ tool that comes with U-Boot (see ="tools/gen_eth_addr"= )
     can be used to generate random addresses from this pool.
14.2.12. Erasing Flash Fails		1. Abstract		14.2.14. Where Can I Get a Valid MAC Address from?
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