Configure service cidr of the cluster with calico policy only

Question

Cluster ->

pod cidr - 10.255.0.0/16

service cidr - 10.252.0.0/16

Using - https://github.com/projectcalico/calico/blob/master/manifests/calico-policy-only.yaml

I am using flannel as cni plugin in the cluster and using calico for just network policies.I have defined CALICO_IPV4POOL_CIDR (in the calico/node daemonset) as the cluster-cidr or pod-cidr which is 10.255.0.0/16.

But when I add netpol for my pod to egress to service cidr , my workload still fails to reach to endpoint 10.252.0.1/443.

netpol ->

apiVersion: networking.k8s.io/v1
kind: NetworkPolicy
metadata:
  name: pod-egress-to-k8s-services
spec:
  podSelector:
    matchLabels:
      name: pod
  policyTypes:
  - Egress
  egress:
  - to:
    - ipBlock:
        cidr: 10.252.0.0/16

Is there a way to define service cidr in calico explicitly ?