ction, and because all traffic is first redirected to the Istio sidecar, the sidecar will always accept the connection.
In Istio 1.12, this issue is resolved by using the <a href=/v1.16/docs/ops/configuration/mesh/app-health-check/>same mechanism used for HTTP probes</a>.
As a result, TCP probes in 1.12+ will start to properly check the health of the configured port. If your probes previously would have failed, they may now start failing unexpectedly.
This change can be disabled temporarily by setting the <