<h3 id="Type_unification_rules">Type unification rules</h3>

<p>
The type unification rules describe if and how two types unify.
The precise details are relevant for Go implementations,
affect the specifics of error messages (such as whether
a compiler reports a type inference or other error),
and may explain why type inference fails in unusual code situations.
But by and large these rules can be ignored when writing Go code:

#### **RBAC**

*   New permissions have been added to default RBAC roles ([#52654](https://github.com/kubernetes/kubernetes/pull/52654),[ @liggitt](https://github.com/liggitt)):
    *   The default admin and edit roles now include read/write permissions
    *   The view role includes read permissions on poddisruptionbudget.policy resources.

* Ensure the backend pools are set correctly for Azure SLB with multiple backend pools (e.g. outbound rules) ([#76691](https://github.com/kubernetes/kubernetes/pull/76691), [@feiskyer](https://github.com/feiskyer))

- In "large" clusters, kube-proxy in iptables mode will now sometimes
  leave unused rules in iptables for a while (up to `--iptables-sync-period`)
  before deleting them. This improves performance by not requiring it to
  check for stale rules on every sync. (In smaller clusters, it will still
  remove unused rules immediately once they are no longer used.)

- Drop additional rule requirement (cronjobs/finalizers) in the roles who use kubectl create cronjobs to be backwards compatible ([#124883](https://github.com/kubernetes/kubernetes/pull/124883), [@ardaguclu](https://github.com/ardaguclu)) [SIG CLI]

- Change GCP ILB firewall names to contain the `k8s-fw-` prefix like the rest of the firewall rules. This is needed for consistency and also for other components to identify the firewall rule as k8s/service-controller managed. ([#84622](https://github.com/kubernetes/kubernetes/pull/84622), [@prameshj](https://github.com/prameshj))

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// sg : https://www.sgnic.sg/domain-registration/sg-categories-rules
// Confirmed by registry <******@****.***> 2024-11-19
sg
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// sh : http://nic.sh/rules.htm
sh
com.sh
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// si : https://www.iana.org/domains/root/db/si.html
si

- Fixed a bug where kube-proxy returns error due to existing ipset rules using a different hash type. ([#77371](https://github.com/kubernetes/kubernetes/pull/77371), [@andrewsykim](https://github.com/andrewsykim))
- Fixed spurious error messages about failing to clean up iptables rules when using iptables 1.8. ([#77303](https://github.com/kubernetes/kubernetes/pull/77303), [@danwinship](https://github.com/danwinship))

- Fixed bug in CRD Validation Rules (beta) and `ValidatingAdmissionPolicy` (alpha) where all admission requests could result in `internal error: runtime error: index out of range [3] with length 3 evaluating rule: <rule name>` under certain circumstances. ([#114857](https://github.com/kubernetes/kubernetes/pull/114857), [@jpbetz](https://github.com/jpbetz))

    * - Update debian-iptables image for CVEs.
    * - Change chain name to IP-MASQ to be compatible with the
    * pre-injected masquerade rules.
* Fix VMWare VM freezing bug by reverting [#51066](https://github.com/kubernetes/kubernetes/pull/51066) ([#67825](https://github.com/kubernetes/kubernetes/pull/67825), [@nikopen](https://github.com/nikopen))