Hi,
If you have an nginx ingress service with a LoadBalancer type and PROXY protocol enabled in kubernetes, it is inaccessible from the local network, since kube-proxy routes the local traffic directly to the service endpoints. Thus this traffic doesn't have PROXY protocol header and the connection to nginx fails.
It would be nice to have an option for nginx to not expect PROXY protocol header for configured CIDRs.
See also https://github.com/kubernetes/ingress-nginx/issues/9681
Regards