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Linux/LINUXSDK-OMAPL138: Ping works in one direction between LCDK and PC

Part Number:LINUXSDK-OMAPL138

Tool/software: Linux

Hi,

I'm setting environment for embedded linux application development with OMAP-L138 LCDK and got a problem while configuring tftp. My host is running with Windows 7, and building the uboot and kernel through Ubuntu 12.04 on VMware. The "UART-USB" of the LCDK is connect to the PC through USB cable, and the PHY of the LCDK is connected to the PC through a Ethernet-USB adapter. 

After loading the uboot to the LCDK, I got something confusing:

The LCDK is given a static IP address 192.168.226.224, and the Ethernet-USB adapter is given as 192.168.226.225.

When we ping the PC from the LCDK through uboot, it works fine:

Image may be NSFW.
Clik here to view.

But when I try to ping the LCDK from the host (the VM is turnned off), it failed:

Image may be NSFW.
Clik here to view.

Regards,

Albert


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