Hello,

I already followed this guide to configure multiple machines on the network to connect to the same master. I have setup both computers with the comand export ROS_MASTER_URI=http://MYHOSTNAME:11311, where MYHOSTNAME ist the host name of the computer where the master node is running on.

When I am trying to execute the listener-talker-example from the rospy_tutorials, I get the following message on the terminal where my master is running:

Couldn't find an AF_INET address for [udoo]

Where udoo is the hostname of one of my machines, that the master node is not running on.

I have already followed the NetworkSetup and the Troublehooting.

Help is much appreciated.