* Bump ip-masq-agent to v2.1.1 ([#67916](https://github.com/kubernetes/kubernetes/pull/67916), [@MrHohn](https://github.com/MrHohn))
    * - Update debian-iptables image for CVEs.
    * - Change chain name to IP-MASQ to be compatible with the
    * pre-injected masquerade rules.

- The kubelet now creates an iptables chain named `KUBE-IPTABLES-HINT` in
  the `mangle` table. Containerized components that need to modify iptables
  rules in the host network namespace can use the existence of this chain
  to more-reliably determine whether the system is using iptables-legacy or

DX, R14 // r4 += a4×b0 MOVQ 32(CX), AX MULQ (BX) ADDQ AX, R15 ADCQ DX, R14 // First reduction chain MOVQ $0x0007ffffffffffff, AX SHLQ $0x0d, DI, SI SHLQ $0x0d, R9, R8 SHLQ $0x0d, R11, R10 SHLQ $0x0d, R13, R12 SHLQ $0x0d, R15, R14 ANDQ AX, DI IMUL3Q $0x13, R14, R14 ADDQ R14, DI ANDQ AX, R9 ADDQ SI, R9 ANDQ AX, R11 ADDQ R8, R11 ANDQ AX, R13 ADDQ R10, R13 ANDQ AX, R15 ADDQ R12, R15 // Second reduction chain (carryPropagate) MOVQ DI, SI SHRQ $0x33, SI MOVQ R9, R8 SHRQ $0x33, R8 MOVQ R11, R10 SHRQ $0x33,...

    - [Deprecation of FlexVolume](#deprecation-of-flexvolume)
    - [Deprecation of klog specific flags](#deprecation-of-klog-specific-flags)
    - [Software Supply Chain SLSA Level 1 Compliance in the Kubernetes Release Process](#software-supply-chain-slsa-level-1-compliance-in-the-kubernetes-release-process)
    - [IPv4/IPv6 Dual-stack Networking graduates to GA](#ipv4ipv6-dual-stack-networking-graduates-to-ga)

* Bump ip-masq-agent to v2.1.1 ([#67916](https://github.com/kubernetes/kubernetes/pull/67916), [@MrHohn](https://github.com/MrHohn))
    * Update debian-iptables image for CVEs.
    * Change chain name to IP-MASQ to be compatible with the pre-injected masquerade rules.

DX, R14 // r4 += a4×b0 MOVQ 32(CX), AX MULQ (BX) ADDQ AX, R15 ADCQ DX, R14 // First reduction chain MOVQ $0x0007ffffffffffff, AX SHLQ $0x0d, DI, SI SHLQ $0x0d, R9, R8 SHLQ $0x0d, R11, R10 SHLQ $0x0d, R13, R12 SHLQ $0x0d, R15, R14 ANDQ AX, DI IMUL3Q $0x13, R14, R14 ADDQ R14, DI ANDQ AX, R9 ADDQ SI, R9 ANDQ AX, R11 ADDQ R8, R11 ANDQ AX, R13 ADDQ R10, R13 ANDQ AX, R15 ADDQ R12, R15 // Second reduction chain (carryPropagate) MOVQ DI, SI SHRQ $0x33, SI MOVQ R9, R8 SHRQ $0x33, R8 MOVQ R11, R10 SHRQ $0x33,...

- The `IPTablesOwnershipCleanup` feature (KEP-3178) is now GA; kubelet no longer
  creates the `KUBE-MARK-DROP` chain (which has been unused for several releases)
  or the `KUBE-MARK-MASQ` chain (which is now only created by kube-proxy). ([#119374](https://github.com/kubernetes/kubernetes/pull/119374), [@danwinship](https://github.com/danwinship))

## Changelog since v1.4.0-beta.1

### Other notable changes

* Fix a bug in kubelet hostport logic which flushes KUBE-MARK-MASQ iptables chain ([#32413](https://github.com/kubernetes/kubernetes/pull/32413), [@freehan](https://github.com/freehan))
* Stick to 2.2.1 etcd ([#32404](https://github.com/kubernetes/kubernetes/pull/32404), [@caesarxuchao](https://github.com/caesarxuchao))

* Stick to 2.2.1 etcd ([#32404](https://github.com/kubernetes/kubernetes/pull/32404), [@caesarxuchao](https://github.com/caesarxuchao))
* Fix a bug in kubelet hostport logic which flushes KUBE-MARK-MASQ iptables chain ([#32413](https://github.com/kubernetes/kubernetes/pull/32413), [@freehan](https://github.com/freehan))

- Signal handling is now initialized within hyperkube commands that require it, such as apiserver and kubelet. ([#76659](https://github.com/kubernetes/kubernetes/pull/76659), [@S-Chan](https://github.com/S-Chan))