[Solved] ProLiant ML150 G9 unable to communicate with gateway

[ocean_breeze]

Hey, this is my first post on the forums. I've dug around everywhere and not been able to find anyone else with my same issue. My unRAID machine has inexplicably stopped communicating with my gateway. It can ping everything else on my network, but not my gateway. This is the only machine on my network with this issue. I've currently only got one onboard NIC plugged in.

I've checked firewall settings and not found any rules or routes that prohibit traffic. Weirdly, the VMs using the br0 interface have no problem getting out to the gateway.

It may be important to note that this machine hosts an OpnSense VM (that has its own two NICs separate from the onboard NIC).

I have attached my diagnostics file along with screenshots of my eth0 configuration and my routing. Am I missing something here? Is there any more information that I can/should provide?

Thanks!

fileserver-diagnostics-20230421-1924.zip

Edited April 23, 2023 by ocean_breeze
Solved

[ocean_breeze]

Found the issue! It was caused by permanent ARP entry on my Opnsense router's ARP table that had an outdated MAC and seemed to be readded by the old DHCP server I used to use on there. Not a problem with unRAID at all!