network – Macbook can’t connect anymore to specific LAN host after update to Sequoia

My Macbook can’t reach my NAS on local network. Can’t even ping it.
Another Macbook has no issues. Both updated to Sequoia.
No firewalls on mac or NAS. All LAN addresses vetted in NAS.
No LAN rules preventing connections in router.

Airbook M1 Sequoia 15.1 on wifi