* possible to update the spec field of an existing
    * NetworkPolicy. (Previously you had to delete and recreate a
    * NetworkPolicy if you wanted to change it.)
* Fix udp service blackhole problem when number of backends changes from 0 to non-0 ([#48524](https://github.com/kubernetes/kubernetes/pull/48524), [@freehan](https://github.com/freehan))

- Fixed a bug with dual stack clusters using the beta feature MultiCIDRServiceAllocator which could not create dual stack Services or Services with IPs in the secondary range. Users who wanted to use this feature in version 1.30 with dual stack clusters could work around the issue by setting the feature gate DisableAllocatorDualWrite to true. ([#127598](https://github.com/kubernetes/kubernetes/pull/127598), [@aojea](https://github.com/aojea))...

### Docs

[https://eprint.iacr.org/2011/239.pdf]. var c uint for i := 0; i < n; i++ { _ = T[n+i] // bounds check elimination hint // Step 1 (T = a × b) is computed as a large pen-and-paper column // multiplication of two numbers with n base-2^_W digits. If we just // wanted to produce 2n-wide T, we would do // // for i := 0; i < n; i++ { // d := bLimbs[i] // T[n+i] = addMulVVW(T[i:n+i], aLimbs, d) // } // // where d is a digit of the multiplier, T[i:n+i] is the shifted // position of the product of that digit, and T[n+i]...

[https://eprint.iacr.org/2011/239.pdf]. var c uint for i := 0; i < n; i++ { _ = T[n+i] // bounds check elimination hint // Step 1 (T = a × b) is computed as a large pen-and-paper column // multiplication of two numbers with n base-2^_W digits. If we just // wanted to produce 2n-wide T, we would do // // for i := 0; i < n; i++ { // d := bLimbs[i] // T[n+i] = addMulVVW(T[i:n+i], aLimbs, d) // } // // where d is a digit of the multiplier, T[i:n+i] is the shifted // position of the product of that digit, and T[n+i]...