roslaunch Unable to contact my own server

edit

I have Turtlebot, running Indigo.

I'm able to run rviz on my machine

  rosrun rviz rviz

and able to see camera input and other topics from rviz on my machine,

But running:

roslaunch  turtlebot_rviz_launchers view_navigation.launch

Gives the following error

Unable to contact my own server at [ http://robot.mydomain.mz:35483/ ]. This usually means that the network is not configured properly.

A common cause is that the machine cannot ping itself. Please check for errors by running:

ping robot.mydomain.mz

For more tips, please see

http://www.ros.org/wiki/ROS/NetworkSetup The traceback for the exception was written to the log file

I can ping the robot machine on "robot.domain.com", and from the robot machine it can ping itself and my machine (testing from ssh), also netcat works fine from the two sides !

In my machine I have the following environment variable

export ROS_MASTER_URI=http://robot.mydomain.mz:11311
export ROS_HOSTNAME=robot.mydomain.mz
export ROS_IP=<robot machine IP>

On the Trutlebot machine

ROS_MASTER_URI=http://localhost:11311
ROS_HOSTNAME=robot.mydomain.mz
ROS_IP=<robot machine IP>

I noticed that application/tools running using rosrun works fine from my machine and connect to the Turtlebot without any issues, like:

 rosrun kobuki_dashboard kobuki_dashboard   <Works fine>

While, tools starting using roslaunch all having the same issue

 roslaunch turtlebot_dashboard turtlebot_dashboard.launch   <gives the same error>

EDITED: Replace robot.domain.com by robot.mydomain.mz (to show that this just an example)