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[Ajiva Fan <aji.zqfan@xxxxxxxxx>]

i'm following this guide
https://github.com/mseknibilel/OpenStack-Grizzly-Install-Guide

if i launch an instance from horizon, i can using ip netns exec qrouter-xxx
ping xxx to ping that instance and ssh to it, and access external network,
everything seems fine, at least from my view.

**However, i cannot ping it if i launch the instance via nova boot command**

is there anybody has met such problem? please help me