I'm trying to setup a network policy in kubernetes where a generic group of pods having the same label value for a key are allowed to have traffic on one port.

Say there are:

Pod A:
 labels:
  meshId="d5ea1b48"

and

Pod B:
 labels:
  meshId="d5ea1b48"

and more pods having the same label meshId=d5ea1b48. The mesh represents a mesh network in which simply all included pods are allowed to have traffic on one port.

My goal interpreted in yaml:

kind: NetworkPolicy
apiVersion: networking.k8s.io/v1
metadata:
  name: example
spec:
  podSelector:
    matchLabels:
      meshId: %meshId of from-pod%
  ingress:
  - ports:
    - port 1234
    - protocol: TCP
  - from:
      - podSelector:
          matchLabels:
            meshId: %meshId of to-pod%

So if I am not wrong this config says: I want to deny incoming traffic on port 1234 for those who does not have the same meshId.

Is there a way of creating a kubernetes NetworkPolicy once for all possible meshIds? How would such solution look in yaml?

I don't want to create a new NetworkPolicy for every new meshId because there will be a ton of them and I also think that would harm the performance of the cluster network if there are like 50.000+ NetworkPolicies.