I have the following situation, which appeared suddenly originally I can ping outside website very well, but now each VM cannot even ping its neighbor.
https://dl.dropboxusercontent.com/u/46163331/Capture.JPG (The link is the ifconfig caption)
Should there have any else tools are helpful for trouble shooting? I am really new to Linux. The best I can do is figure out all the ping packets goes into loopback interface directly@@
Thanks in advance!!!