Using OpenCore Plus IP (Triple Speed Ethernet) in Quartus v13.0 subscription edition

I see -- thanks for clarifying. I also found this page helpful:

https://www.altera.com/support/support-resources/knowledge-base/solutions/rd12202011_654.html

which specifies how to deactivate the EDA Netlist step in the compilation:

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To avoid this error, disable the EDA simulation tool in your project by opening the Settings dialog box from the Quartus II Assignments menu. Select the category EDA Tool Settings and the subcategory Simulation. On the Simulation page of the Settings dialog box, change the Tool name option to <None>.

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For reference, I found that Triple-Speed Ethernet is part of the MegaCore IP library and that

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For MegaCore functions, the untethered timeout is 1 hour; the tethered timeout value

is indefinite

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(from https://www.altera.com/en_us/pdfs/literature/ug/ug_ed8b10b.pdf)