Service restart for C2D messaging subscribe fail

[MWGMorningwood]

Description

Subscribe for c2d failed. Not enabling feature
After a service restart, Successfully enabled feature:c2d

Re-creation

I have not been able to re-create this yet after five deployments. It only happened on the first.
I'll keep an eye on it and post back here if it happens again or close it out if it does not.

Logs

disconnected with result code: 7
Enabling feature:c2d...
subscribing to devices/dae41526-ba44-489a-aa80-a16eccdec904/messages/devicebound/# with qos 1
Subscribe for c2d failed.  Not enabling feature
Forcing paho disconnect to prevent it from automatically reconnecting
Callback completed with error The client is not currently connected.
MQTTTransportStage: _on_mqtt_disconnect called: The connection was lost.
['azure.iot.device.common.transport_exceptions.NoConnectionError: The client is not currently connected.\n']

Proposed resolution

Look for subscribe for c2d failed and auto-restart service.