Problem with new Arduino Ethernet board


i purchased new arduino ethernet board (the new integrated board, not separate ethernet shield) , can't run ethernet sketches.  have older arduino ethernet shield (r3) works fine same sketches, included example ethernet sketches, not run correctly on new board.

the sketches load fine , ones give serial feedback show fails make network connection.  other simple sketches seem work fine (blink, etc.) long don't need make network connection.  programming via ftdi seems working.

the info page arduino ethernet mentions having latest bootloader given link broken.

can't think of else try.  ideas or bad board?

some of examples missing dns server address argument ethernet.begin().  this causes subnet mask used gateway address nothing work.  try removing mac address argument call ethernet.begin() see if getting address via dhcp let make connection.

if need fixed ip address can put gateway address in twice if no dns server address being passed.


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