When installing Mac OS, Ventura writes "An internet connection is required to install Mac OS".

Spec:

1. Motherboard Z590 Tomahawk WIFI Z590 Torpedo
2. Processor Intel(R) Core(TM) i7-10700
3. Graphics MSI GeForce RTX 2080 GAMING X TRIO
4. Memory ADATA XPG SPECTRIX D41 RGB (16G)
5. OC: OpenCore-0.9.6
6. Intel I225-V Ethernet Controller PCI

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The Internet is connected exclusively via Lan cable.