ROS dies when wifi disconnects temporarily

edit

I'm using ROS across two machines: robot and workstation

When the wifi on the robot disconnects (might happen when switching AP's), the ros processes die.

I tried using 127.0.0.1 for ROS_MASTER and ROS_HOSTNAME which solves the issue but my workstation cannot connect to the robot. I also tried using 0.0.0.0 for ROS_MASTER and ROS_HOSTNAME but ROS doesn't like it.

I've also tried ssh port forwarding but ROS uses many ports.

The command that I run on the robot is:

roslaunch turtlebot_bringup minimal.launch and roslaunch turtlebot_navigation amcl_demo.launch map_file:=/tmp/my_map.yaml

The command that I run on the wokstation is roslaunch turtlebot_rviz_launchers view_navigation.launch

How to solve this issue ?