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I'm using Ubuntu indigo 14.04 with Oracle VirtualBox 5.2.18 and I have a problem with my Virtual machine which can't ping itself but can ping all the network. Also, the other computers can ping each other but can't ping the virtual machine. My network is composed by : 2 virtual machines (chloe and another one) on the main station, the main station, a first router, the second router in client mode, an Advantech computer on a robot and Ubuntu on this computer (efim).

So, from chloe, I can ping all of this stuff but not chloe itself. I had the issue : "Destination Host Unreachable" while I'm just pinging chloe itself.

In the settings, I choose NAT for the Virtual Machine.

Moreover, I tried a


and I have the following warning :

  ROS_HOSTNAME may be incorrect: ROS_HOSTNAME [chloe] resolves to [], which does not appear to be a local IP address ['', '', '', ''].

What I did after this is : for main station

    export ROS_HOSTNAME=chloe
    export ROS_MASTER_URI=http://chloe:11311

for advantech

    export ROS_HOSTNAME=efim
    export ROS_MASTER_URI=http://chloe:11311

But after I have an error saying :

  ROS_MASTER_URI is not set for this machine

Anyone can help me please ?


Originally posted by kevinrossi on ROS Answers with karma: 26 on 2018-09-25

Post score: 0

Original comments

Comment by gvdhoorn on 2018-09-25:
So ping in a terminal doesn't work?

If so, this is not really a ROS question I'm afraid.

If this is a ROS question, then please provide more details on your network setup. We'll need full IP/netmask and network topology (ie: what is connected to what).

A diagram may help.

Comment by kevinrossi on 2018-09-25:
Yes, ping doesn't work in a terminal.

I have one diagram but I'm new and I can't add picture.

Comment by gvdhoorn on 2018-09-25:
re: attaching images: I've just given you sufficient karma for that.

re: ping doesn't work: that would point to an issue with your network configuration. Are you sure that is the correct IP?

Comment by Boregard on 2018-09-25:
may you post output of "ifconfig"


1 Answer 1


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It's okay now, the IP was wrong so I changed it in the settings and now it's working. Thank you !

Originally posted by kevinrossi with karma: 26 on 2018-09-26

This answer was ACCEPTED on the original site

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