After a hardware change, your NIC might be eth1 instead of eth0 . Run:
Blog Post: How to Reset Unraid Network Settings to Factory Defaults unraid reset network settings install
To reset your Unraid network settings to the installation defaults (DHCP), the most effective method is to from your boot media . This is useful if you have accidentally assigned an unreachable static IP or are moving the drive to a new server. Manual Network Reset via Flash Drive After a hardware change, your NIC might be