### What happened?

While we tried to scale in/out pods, reconciler failure was reported . Reconciler job scheduled for every 5 minutes but failed to execute with the given error: 
`[error] failed to list all OverLappingIPs: client rate limiter Wait returned an error: context deadline exceeded.`
 `[error] failed to create the reconcile looper: failed to list all OverLappingIPs: client rate limiter Wait returned an error: context deadline exceeded`
`[verbose] reconciler failure: failed to list all OverLappingIPs: client rate limiter Wait returned an error: context deadline exceeded.`

The deployment of pod replicas scaled out to 500, the same for ipam podreferences. But when we scale in replicas to 1, pods are scaled in successfully multiple times but more that 100 podreferences are left. Sometimes pods are staying in terminating state. We did multiple series of scale in/out and then uninstall and redeployment - the same issue faced every time: more than 100 pod references left undeleted after scale in. The number of pod references increase as we do multiple times scale in.

Pod reference left undeleled :
```
kubectl get ippools.whereabouts.cni.cncf.io -n kube-system  197.0.0.0-8 -o yaml | grep -c podref
143
```
Error when pod is in terminating state: 
`Warning  FailedKillPod   46s    kubelet            error killing pod: failed to "KillPodSandbox" for "f48e47e5-a4c7-44df-ad4a-b420844dcacc" with KillPodSandboxError: "rpc error: code = DeadlineExceeded desc = context deadline exceeded"`

Issue reported also in [whereabouts](https://github.com/k8snetworkplumbingwg/whereabouts/issues/389)

### What did you expect to happen?

We expect all podreferences should be deleted during scale in and it shouldn't generate any error in terminating state or podreference issue.



### How can we reproduce it (as minimally and precisely as possible)?

Reproduction can be done using the [test](https://github.com/k8snetworkplumbingwg/whereabouts?tab=readme-ov-file#running-whereabouts-cni-in-a-local-kind-cluster) where we have used 8 NetworkAttachmentDefinition and do the following steps:

1. The deployment of pod replicas to 500, the same for ipam pod references.
2. Scale in replicas to 1, pods are scaled successfully but more than 100 pod references are left undeleted.
3. Do these 2 series of scale in/out and then release uninstall and redeployment - the same issue every time: more than 100 pod references left undeleted after a scale in.

### Anything else we need to know?

Would like to explain the issue here in steps for better view:

1. IPs are stored as the ippools CRD of whereabouts, There is an overlapping IP ranges CRD used to store all IPs.[Which creates object for each IP] 
4. The issue is when reconciler code tries to fetch all the objects in under the overlappingipranges. When the number of IPs grow, the number of overlappingipranges objects grow(one for each IP)
5. Reconciler on the initialization of the the first executor objects tries to list all objects under the overlappingipranges CRD, and hits a context-deadline.

### Kubernetes version

<details>

```console
Issue started with 1.26.1 version and also reproduced in later versions.
```

</details>


### Cloud provider

<details>

</details>


### OS version

<details>

```console
# On Linux:
$ cat /etc/os-release
# paste output here
$ uname -a
# paste output here

# On Windows:
C:\> wmic os get Caption, Version, BuildNumber, OSArchitecture
# paste output here
```

</details>


### Install tools

<details>

</details>


### Container runtime (CRI) and version (if applicable)

<details>

</details>


### Related plugins (CNI, CSI, ...) and versions (if applicable)

<details>
Whereabouts version : 0.6.2 and also with upgraded version
</details>

Failed to create the reconcile looper: failed to list all OverLappingIPs: client rate limiter Wait returned an error: context deadline exceeded
This is a GitHub Issue
repo:kubernetes
owner:kubernetes
Title : Failed to create the reconcile looper: failed to list all OverLappingIPs: client rate limiter Wait returned an error: context deadline exceeded
Issue date:

--- start body ---
### What happened?

While we tried to scale in/out pods, reconciler failure was reported . Reconciler job scheduled for every 5 minutes but failed to execute with the given error: 
`[error] failed to list all OverLappingIPs: client rate limiter Wait returned an error: context deadline exceeded.`
 `[error] failed to create the reconcile looper: failed to list all OverLappingIPs: client rate limiter Wait returned an error: context deadline exceeded`
`[verbose] reconciler failure: failed to list all OverLappingIPs: client rate limiter Wait returned an error: context deadline exceeded.`

The deployment of pod replicas scaled out to 500, the same for ipam podreferences. But when we scale in replicas to 1, pods are scaled in successfully multiple times but more that 100 podreferences are left. Sometimes pods are staying in terminating state. We did multiple series of scale in/out and then uninstall and redeployment - the same issue faced every time: more than 100 pod references left undeleted after scale in. The number of pod references increase as we do multiple times scale in.

Pod reference left undeleled :
```
kubectl get ippools.whereabouts.cni.cncf.io -n kube-system  197.0.0.0-8 -o yaml | grep -c podref
143
```
Error when pod is in terminating state: 
`Warning  FailedKillPod   46s    kubelet            error killing pod: failed to "KillPodSandbox" for "f48e47e5-a4c7-44df-ad4a-b420844dcacc" with KillPodSandboxError: "rpc error: code = DeadlineExceeded desc = context deadline exceeded"`

Issue reported also in [whereabouts](https://github.com/k8snetworkplumbingwg/whereabouts/issues/389)

### What did you expect to happen?

We expect all podreferences should be deleted during scale in and it shouldn't generate any error in terminating state or podreference issue.



### How can we reproduce it (as minimally and precisely as possible)?

Reproduction can be done using the [test](https://github.com/k8snetworkplumbingwg/whereabouts?tab=readme-ov-file#running-whereabouts-cni-in-a-local-kind-cluster) where we have used 8 NetworkAttachmentDefinition and do the following steps:

1. The deployment of pod replicas to 500, the same for ipam pod references.
2. Scale in replicas to 1, pods are scaled successfully but more than 100 pod references are left undeleted.
3. Do these 2 series of scale in/out and then release uninstall and redeployment - the same issue every time: more than 100 pod references left undeleted after a scale in.

### Anything else we need to know?

Would like to explain the issue here in steps for better view:

1. IPs are stored as the ippools CRD of whereabouts, There is an overlapping IP ranges CRD used to store all IPs.[Which creates object for each IP] 
4. The issue is when reconciler code tries to fetch all the objects in under the overlappingipranges. When the number of IPs grow, the number of overlappingipranges objects grow(one for each IP)
5. Reconciler on the initialization of the the first executor objects tries to list all objects under the overlappingipranges CRD, and hits a context-deadline.

### Kubernetes version

<details>

```console
Issue started with 1.26.1 version and also reproduced in later versions.
```

</details>


### Cloud provider

<details>

</details>


### OS version

<details>

```console
# On Linux:
$ cat /etc/os-release
# paste output here
$ uname -a
# paste output here

# On Windows:
C:\> wmic os get Caption, Version, BuildNumber, OSArchitecture
# paste output here
```

</details>


### Install tools

<details>

</details>


### Container runtime (CRI) and version (if applicable)

<details>

</details>


### Related plugins (CNI, CSI, ...) and versions (if applicable)

<details>
Whereabouts version : 0.6.2 and also with upgraded version
</details>

--- end body ---
