Serial Port Mode TCP Client not working

[JImC]

The VM fails to start when using a Serial Port with Mode TCP Client. I have another VM running with a Serial Port in TCP Server mode and it works fine. I can telnet to the port and transmit characters. But the client side VM fails to start with the following message. I have attached the full VM log as well. I have used this functionality successfully in the past. I don't remember exactly when it broke, but I believe it was within the last few months. I have verified that this problem exists on MacOS and Windows. I suspect it is not platform dependent.

Failed to open a session for the virtual machine ISOSCELES PCA Pump seL4.

DrvTCP#0: The location misses the port to connect to (VERR_NOT_FOUND).

Result Code: NS_ERROR_FAILURE (0x80004005)
Component: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

[aeichner]

Configuration error (yeah I know that this comes probably much too late for you ;)), your path needs to have a host:port setting whereas you only have the port given.