Two ROS computers - roswtf: WARNING The following nodes are unexpectedly connected:

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Are you saying the master URL on the destination rosnode should be ip arp, instead of dns name?

It may help to solve your case. By the way, the main machine must be set as localhost on ROS_MASTER_URI. A schema of the configuration you want would be great.

I tried both IP, on main machine, and setting it to localhost in the ROS_MASTER_URI. Neither solved the issue. The following is using IP on computer2, and setting ROS_MASTER_URI of http://localhost:11311 on computer1. (using IP instead of localhost yielded the same result). The /controlnode is

IP Address 10.42.0.2

WARNING The following nodes are unexpectedly connected: * unknown ( http://10.42.0.2:41859/)->/turtlesim (/turtle1/cmd_vel)

Found 1 error(s).

ERROR The following nodes should be connected but aren't: * /controlnode->/turtlesim (/turtle1/cmd_vel)

Any other suggestions?

check your firewall and go back to Network Setup and can you provide a schematic of the different IP and environnement variables on both machines , I think it will help you to solve this issue.

No firewall, and I believe I am going to need to look at the xmlrpc method that creates a publishing connection. I am baffled why ros would be connected to client, but think the connection should be the node name instead of hostname or ip....

I configured turtlesim on single machine using IP Address instead of localhost, or machine name and it works fine. Problem exists on multiple machines regardless of configuration, and I've gone to the extent of implementing multiple XMLRPC calls to troubleshoot, all seem good: getURI(/controlnode):

This forum says my content is forbidden. If I try to paste data here from XMLRPC calls.