Port unavailable in Kubernetes pod

I have a three node Kubernetes cluster and a deployment with 5 replicas. Each pod of the deployment exposes port :3401 and :4000 (one for debugging, and one for the application). I have two services (one for each port the pods expose). I have an ingress controller, and a single ingress for the application that is exposed by the application service.

Three of my pods are able to start while the other two log the following error:

 main: error: server error: listen tcp :3401: bind: address already in use

Is it possible to have more pods than nodes listening on a single port using Kubernetes? If so, where would I go about debugging this issue?

I had the following lines in my pod spec for the deployment:

 hostNetwork: true

Must have copied and pasted it from somewhere without thinking. :(