From: ol.sc@web.de   
      
   Hi,   
      
   > However, when I run an IP65   
   > program such as DATE65, it sometimes makes its DHCP request with this MAC   
   > and sometimes some other MAC (usually 00:08:DC:11:11:11, which just so   
   > happens to be the default for Contiki.   
      
   This isn't a question of IP65 vs Contiki but a question of old vs. new.   
   Both IP65 and Contiki use the exact same driver. At some point I changed   
   the MAC from ...:11 to ...:A2. So you have an old Contiki and a new IP65.   
      
   > I don't see anything fishy in the   
   > code, and I can't explain this behaviour.   
      
   I can't explain this too. I must admit that I question that your experience   
   is EXACTLY the one you describe - but that doesn't matter after all.   
      
   > The reason I am messing with this is I have more than one Apple II with   
   > Uthernet II on my LAN, and I can't have them using the same MAC ;) I was   
   > thinking to add the MAC address to the ETHERNET.SLOT file that IP65 uses.   
      
   There's no need to hack that driver to do that. On initialization the   
   driver checks the W5100 register $001A (which has the power-up default $55)   
   for the value $06. If that value is found it does not use its own MAC   
   address but the one found in the W5100 registers $0009-$000E (and leaves   
   $001A at $06).   
      
   Please note that the driver does NOT(!) set the register $001A to $06 when   
   it finds it to have the power-up default $55. Rather it sets it to $1A.   
      
   So the driver will never enter this "MAC re-use" mode by itself. You need   
   to explicitly set it before initializing the driver once e.g. with a   
   specific MAC-Set program. But then the driver will stay in that MAC re-use   
   mode over several initializations - until a Ctrl-Reset or power cycle.   
      
   > Hoping Oliver Schmidt gets to read this and can give me an idea what is   
   > going on.   
      
   The usual way to contact a person is to write an email - but I guess that   
   you as an author of SMTP / POP3 software know that ;-)   
      
   Regards,   
   Oliver   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)