Roscore not finding rostopic

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I am configuring a whole new setup, with a new Turtleot3, a new computer, and a new wifi network. And I can't get what should simple to work...

On a Mac, Running VMware, with Ubuntu 16.04, and ROS Kinetic installed (correctly, I hope), I have the following confusing behavior. Do you see the problem?

Here are the key environment variables defined in bashrc in the VMWare Linux instance:

export ROS_MASTER_URI=http://129.64.123.200:11311
export ROS_IP=129.64.123.200

In a fresh shell on VMWare:

$ Roscore
... logging to /home/pitosalas/.ros/log/fdf2db06-860d-11e8-b1a7-000c29b28fa8/roslaunch-ubuntu-44713.log
Checking log directory for disk usage. This may take awhile.
Press Ctrl-C to interrupt
Done checking log file disk usage. Usage is <1GB.

started roslaunch server http://localhost:45411/
ros_comm version 1.12.13


SUMMARY
========

PARAMETERS
 * /rosdistro: kinetic
 * /rosversion: 1.12.13

NODES

auto-starting new master
process[master]: started with pid [44723]
ROS_MASTER_URI=http://localhost:11311/

setting /run_id to fdf2db06-860d-11e8-b1a7-000c29b28fa8
process[rosout-1]: started with pid [44736]
started core service [/rosout]

Note regarding localhost

The report of ROS_MASTER_URI=http://localhost:11311 is what Roscore displays. In both shells we are running on the same .bashrc with export ROS_MASTER_URI=http://129.64.123.200:11311 so I have to assume that Roscore noticing that the master uri env matches localhost, decides to display it as localhost.

Here's the /etc/hosts file which is all defaults as far as I can tell.

127.0.0.1   localhost
127.0.1.1   ubuntu

# The following lines are desirable for IPv6 capable hosts
::1     ip6-localhost ip6-loopback
fe00::0 ip6-localnet
ff00::0 ip6-mcastprefix
ff02::1 ip6-allnodes
ff02::2 ip6-allrouters

printenv | grep ros

$ printenv | grep ros
ROS_ROOT=/opt/ros/kinetic/share/ros
ROS_PACKAGE_PATH=/home/pitosalas/catkin_ws/src:/opt/ros/kinetic/share
LD_LIBRARY_PATH=/home/pitosalas/catkin_ws/devel/lib:/opt/ros/kinetic/lib:/opt/ros/kinetic/lib/x86_64-linux-gnu
PATH=/opt/ros/kinetic/bin:/home/pitosalas/bin:/home/pitosalas/.local/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/usr/games:/usr/local/games:/snap/bin
PYTHONPATH=/home/pitosalas/catkin_ws/devel/lib/python2.7/dist-packages:/opt/ros/kinetic/lib/python2.7/dist-packages
PKG_CONFIG_PATH=/home/pitosalas/catkin_ws/devel/lib/pkgconfig:/opt/ros/kinetic/lib/pkgconfig:/opt/ros/kinetic/lib/x86_64-linux-gnu/pkgconfig
CMAKE_PREFIX_PATH=/home/pitosalas/catkin_ws/devel:/opt/ros/kinetic
ROS_ETC_DIR=/opt/ros/kinetic/etc/ros

printenv | grep ROS

$ printenv | grep ROS
ROS_ROOT=/opt/ros/kinetic/share/ros
ROS_PACKAGE_PATH=/home/pitosalas/catkin_ws/src:/opt/ros/kinetic/share
ROS_MASTER_URI=http://129.64.123.200:11311
ROS_VERSION=1
ROS_HOSTNAME=localhost
ROSLISP_PACKAGE_DIRECTORIES=/home/pitosalas/catkin_ws/devel/share/common-lisp
ROS_DISTRO=kinetic
ROS_IP=129.64.123.200
ROS_ETC_DIR=/opt/ros/kinetic/etc/ros

Unable to communicate

Continuing, the same VMWare Linux instance, a different shell:

$ rostopic list
ERROR: Unable to communicate with master!