- `kube-proxy` will only install the `DROP` rules for invalid `conntrack` states if

0x.p1        // invalid: mantissa has no digits
1p-2         // invalid: p exponent requires hexadecimal mantissa
0x1.5e-2     // invalid: hexadecimal mantissa requires p exponent
1_.5         // invalid: _ must separate successive digits
1._5         // invalid: _ must separate successive digits
1.5_e1       // invalid: _ must separate successive digits
1.5e_1       // invalid: _ must separate successive digits

- Kubernetes e2e framework will use the url `invalid.registry.k8s.io/invalid` instead `invalid.com/invalid` for test that use an invalid registry. ([#107455](https://github.com/kubernetes/kubernetes/pull/107455), [@aojea](https://github.com/aojea))

- CustomResourceDefinition objects created with non-empty `caBundle` fields which are invalid or do not contain any certificates will not appear in discovery or serve endpoints until a valid `caBundle` is provided. Updates to CustomResourceDefinition are no longer allowed to transition a valid `caBundle` field to an invalid `caBundle` field, because this breaks serving of the existing CustomResourceDefinition. ([#124061](https://github.com/kubernetes/k...

- Fix invalid VMSS updates due to incorrect cache ([#89002](https://github.com/kubernetes/kubernetes/pull/89002), [@ArchangelSDY](https://github.com/ArchangelSDY)) [SIG Cloud Provider]

- Api: validation of a `PodSpec` now rejects invalid `ResourceClaim` and `ResourceClaimTemplate` names. For a pod, the name generated for the `ResourceClaim` when using a template also must be valid. ([#116576](https://github.com/kubernetes/kubernetes/pull/116576), [@pohly](https://github.com/pohly))

- Fix invalid "time stamp is the future" error when kubectl cp-ing a file ([#73982](https://github.com/kubernetes/kubernetes/pull/73982), [@tanshanshan](https://github.com/tanshanshan))
- Fix a bug where `kubectl set config` hangs and uses 100% CPU on some invalid property names ([#79000](https://github.com/kubernetes/kubernetes/pull/79000), [@pswica](https://github.com/pswica))

//  1. Ignored fields.  It includes many fields which are not generally honored.  For instance, ResourceVersion and FieldPath are both very rarely valid in actual usage.
//  2. Invalid usage help.  It is impossible to add specific help for individual usage.  In most embedded usages, there are particular

- Fix invalid VMSS updates due to incorrect cache ([#89002](https://github.com/kubernetes/kubernetes/pull/89002), [@ArchangelSDY](https://github.com/ArchangelSDY)) [SIG Cloud Provider]

  - Clients should reload the token from disk periodically (once per minute is recommended) to ensure they continue to use a valid token. `k8s.io/client-go` version v11.0.0+ and v0.15.0+ reload tokens automatically.