add explicit ip forwarding on upf pod and put back standard upf image pull

charts/oai-5g-core/oai-5g-basic/values.yaml

@@ -113,10 +113,10 @@ oai-upf:
   enabled: true
   kubernetesType: Vanilla #Openshift/Vanilla Vanilla for Upstream Kubernetes
   nfimage:  # image name either locally present or in a public/private repository
-    repository: docker.io/r2labuser/oai-upf    ## The image will be pulled from dockerhub
-    version: v2.0.0                                    ## The branch to be used to pull from dockerhub
-    #repository: docker.io/oaisoftwarealliance/oai-upf    ## The image will be pulled from dockerhub
+    #repository: docker.io/r2labuser/oai-upf    ## The image will be pulled from dockerhub
     #version: v2.0.0                                    ## The branch to be used to pull from dockerhub
+    repository: docker.io/oaisoftwarealliance/oai-upf    ## The image will be pulled from dockerhub
+    version: v2.0.0                                    ## The branch to be used to pull from dockerhub
     # pullPolicy: IfNotPresent or Never or Always
     pullPolicy: IfNotPresent
   start:

charts/oai-5g-core/oai-upf/templates/deployment.yaml

@@ -125,6 +125,10 @@ spec:
           initialDelaySeconds: 2
           periodSeconds: 3
         {{- end}}
+        lifecycle:
+          postStart:
+            exec:
+              command: ["/sbin/sysctl", "-w", "net.ipv4.ip_forward=1"]
         {{- if .Values.livenessProbe}}
         livenessProbe:
           exec: