Resolve hostname to IP

[ldmoser]

When I type the name of my machine, or "localhost" in the "host" Input for the MLClient node it fails to connect giving me the error message:
Hostname is invalid

If I type the typical localhost IP 127.0.0.1 it fails with the message:
Could not connect to server. Please check your host / port numbers.

It will ONLY work if I type the IP address returned by the command line:
hostname -I | awk '{print $1}'

It would be great to resolve the host name.