Sorry for late reply lost track of this topic.
Using EtherCatMaster app on the ctrlX COREvirtual is possible from version 1.16 on. But because of the missing master hardware, the data will not be updated (no communication to IOs).
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Just tested it again with the version 1.16 of the system. No IP is given via DHCP and also the port is marked as disabled and no communication is possible:
ctrlX CORE WebUI disabled ethernet port
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