fields[0].type.u.basic.integer.signedness = 0;
fields[0].type.u.basic.integer.reverse_byte_order = 0;
fields[0].type.u.basic.integer.base = 16;
fields[0].type.u.basic.integer.signedness = 0;
fields[0].type.u.basic.integer.reverse_byte_order = 0;
fields[0].type.u.basic.integer.base = 16;