Valid Options: PASSTHROUGH, SIMPLE, MUTUAL, AUTO_PASSTHROUGH, ISTIO_MUTUAL, OPTIONAL_MUTUAL
                          enum:
                          - PASSTHROUGH
                          - SIMPLE
                          - MUTUAL
                          - AUTO_PASSTHROUGH
                          - ISTIO_MUTUAL
                          - OPTIONAL_MUTUAL

In all cases, we spoof the original source IP.

### Inbound Passthrough

Traffic entering a pod that is not transmitted over HBONE  (i.e. with a destination port != 15008) is handled by the "inbound passthrough" code path, on ztunnel's port 15006.

This is fairly straightforward.

First, we need to check that this traffic is allowed.

        `:android_tensorflow_lib_lite*` targets instead.
*   XLA
    *   Move `RoundToEven` function to xla/client/lib/math.h.
    *   A new environment variable `TF_XLA_DEBUG_OPTIONS_PASSTHROUGH` set to "1"
        or "true" allows the debug options passed within an XRTCompile op to be
        passed directly to the XLA compilation backend. If such variable is not