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DM8168 U-boot启动后Ping不通主机



你好,我们自己做的DM8168学习板,用EZSDK制作了u-boot,在ubuntu12.04下minicom,启动之后发现ping不同主机,但是同样的方法在ubuntu10.04下却可以ping通。请问这是什么原因造成的?难道制作的u-boot还与ubuntu系统有关?

注:1、ip网段一致

       2、防火墙已关

      3、用的是双系统WIN7 + ubuntu12.04  不是虚拟机