@Override
    public void onResponseFinished() {
        if (mResponseFinished) {
            return;
        }
        mLog.i("Gateway response finished!");
        mResponseFinished = true;
        if (mPolicy == POLICY_ALLOWED) {
            mGateway.onResponseFinished();
        } else if (mPolicy == POLICY_DISALLOWED) {
            super.onResponseFinished();
        }
    }
This policy doesn't allow data flow to configured virtual gateway.
netbare-core/src/main/java/com/github/megatronking/netbare/NetBareVirtualGateway.java