For on-premises Konvoy deployments, you might notice that you are not able to connect to your cluster services through MetalLB addresses.
The most common culprit of this problem is that you have configured Metal LB to be on a different subnet than the addresses of your nodes.
For instance, if your nodes (in inventory.yaml) are in the 10.0.0.0/18 subnet, the addresses you configure for MetalLB must also be in the 10.0.0.0/18 subnet.
Please refer to this Metal LB issue for more information:
https://github.com/metallb/metallb/issues/433