Incorrect port received

[FrostSource]

The port value given in both EndpointDetected and DatagramReceived does not match the port chosen when creating the endpoint in the other app.

I have copied the src/Node/Program.cs example and built it to test.
I open two versions of the exe with endpoints 127.0.0.1 8000 and 127.0.0.1 8001 respectively.
I send a message from both programs to the alternate ports and the message is received/displayed, however the port shown is incorrect.
If I try to send a message to the port shown, nothing will happen.

Here is an image of the above occurring:

I am unsure if this is an actual bug or a misunderstanding on my part as I have never done networking before (hence my search for a simple library). If this is intended behavior then how would I go about knowing which port to send to without knowing it before an endpoint is detected?