Unsolved Bacnet4j: problem with unsubscribe

[Rom76]

Hi there,

For a project in Java, I use the com.serotonin.bacnet4j library

I want to unsubscribe all activeCovSubscriptions during initialization.
For that, I first get the list of all activeCovSubscriptions and I loop on it to call the unsubcribe.

Get the list: (this part works)

final ReadPropertyRequest request = new ReadPropertyRequest(deviceObject, PropertyIdentifier.activeCovSubscriptions);

Unsubscribe:

final SubscribeCOVRequest cancellation = new SubscribeCOVRequest(new UnsignedInteger(subscriptionProcessIdentifier), monitoredObjectIdentifier, null, null);
try {
	localDevice.getDevice().send(remoteDevice, cancellation, null);
} catch (final Exception e1) {
	LOGGER.warn("Failed to find remote device to which to send unsubscribe", e1);
}

My problem occurs after resetting my docker container: it gets a new MAC address.

Then the unsubscribe doesn't work !
I guess that it's because of the MAC address which was used for the registration is not the same anymore (after the reset of container) when I want to unsubscribe.

Until now, I didn't find any method in bacnet4j where I can provide the MAC address.

Other question: Is there a method to force the deletion of all activeCovSubscriptions ?