This issue is just used to track the status of pending activities needed to promote Dual Stack support in Istio to Alpha.
Reference: https://github.com/istio/enhancements/blob/master/features/dual-stack-support.md

The following items need to be completed to have the promotion. Any new items that need to be tracked can be updated as and when required before we close this task.

• Enable DUAL_STACK flags at test framework level #46860
• Dual-stack: /healthz/ready should have both v4/v6 wildcard listeners #47022
• Improve cluster builder dual stack unit testing #46745
• Dual-stack: /stats/prometheus should have both v4/v6 listeners #47040
• Change operator api to support dual-stack enablement of Istio components #47114
• Dual-stack: add dual-stack echo services for integration tests #47050
• Add gateway integration tests for dual-stack services #47381
• update readiness-probe test to use gateway svc ips #47432
• [Dual-Stack] Use dual-stack pods in reachability tests #47525
• Support multiple addresses for IstioEndpoint #51279
• add dual-stack installation page istio.io#14193
• Add docs test for dual-stack support istio.io#14257
• Missing endpoints when large number of pods is created at once #44043
• Istio cannot be deployed on IPv6-first DS clusters #41462
• Covered the function of GetExtraAddressesForProxy via flag #45578
• Fix issue 41462 to setup correct DNS family lookup #43892
• Add dual-stack docs link to feature details enhancements#170
• QUIC listeners are rejected when DS is enabled #48336
• DualStack - sds ingress QUIC integration test failure #46911
• Fix wrong socket type for extra addresses in QUIC listeners #48334
• Fix dual-stack TestIngress/status postsubmit test failure #49308
• [Dual-stack] Add support for multiple IPs in ingress test framework #49344
• echo server: bind to multiple pod IPs #51617
• Improve dual stack testing #52314
• Initial ambient dual stack support #51606
• Make services dualstack by default in dualstack clusters #51914
• add ambient ipv6 integ-test job test-infra#5401
• Ambient IPv6 integration test runs #51222
• Bugfix: actually use v6 SNAT IP inpod #51221
• Ambient - propagate IPV6 config correctly to CNI agent #50747
• Add option for disabling IPv6 (#1163) ztunnel#1166
• add an optional ambient dual-stack test job test-infra#5420
• Enable dualStack cfg for istiod control plane in dualStack tests #51844
• [Dualstack] failure in ambient TestServices/from_workload-addressed-waypoint #52895