sketch_sep19a:3: error: 'Ethernet' has not been declared
sketch_sep19a.ino: In function 'void setup()':
sketch_sep19a:10: error: 'ether' was not declared in this scope
sketch_sep19a:10: error: 'Ethernet' has not been declared
sketch_sep19a:15: error: 'ether' was not declared in this scope
sketch_sep19a:20: error: 'ether' was not declared in this scope
sketch_sep19a.ino: In function 'void loop()':
sketch_sep19a:27: error: 'ether' was not declared in this scope