k/ingress-nginx: use PROXY protocol

kustomizations/ingress-nginx/controller/resources.yaml

@@ -101,6 +101,8 @@ apiVersion: v1
 kind: Service
 metadata:
   name: ingress-nginx-controller
+  annotations:
+    service.beta.kubernetes.io/do-loadbalancer-enable-proxy-protocol: "true"
 spec:
   ports:
   - appProtocol: http

kustomizations/ingress-nginx/kustomization.yaml

@@ -15,6 +15,7 @@ configMapGenerator:
   literals:
   - allow-snippet-annotations=true
   - annotations-risk-level=Critical
+  - use-proxy-protocol=true
 replacements:
 - source:
     kind: Certificate