Update from 5.0.x to version 6.0.0 with public failsafety interfaces fails

If a node defined in EXAoperation has a network interface dedicated as public failsafety interface, the update process to version 6.0.0 does not succeed and EXAoperation does not come up after the update.

As a workaround, those public failsafety interfaces in EXAoperation can be removed before starting the update and reinserted after the update process finished.

This workaround for the update process to version 6.0.0 is not needed in case the former version is larger than or equals 5.0.21.