unraid Networking Issues: VMs cannot talk to Unraid server

[alexjoel]

Hi! Can't seem to wrap my head around this... any help is appreciated!!

 

Running Unraid Basic 6.8.2. I have 2 VMs, one running CentOS 8.1.1911 and one running Ubuntu Server 18.04.4LTS.

 

I have setup two bridged networks in Unraid: br0 (currently exclusively used by Unraid - webGUI, etc.) and br1: For use by the two VMs. I have confirmed that the interfaces have been assigned correctly, and are plugged in.

 

I have access from my windows machine to both VMs and Unraid with no issues. The issue comes when I am attempting to mount an NFS share (which is on the Unraid server) to the Ubuntu VM. NFS times out claiming it cannot reach host.

After further investigation, I found that I cannot even ping the Unraid IP from either VM. For more info, I am using 2 gigabit ports on the Mobo of a Dell PowerEdge R410, going to a switch that has no segregation.

 

Surely I'm doing something stupid. Thanks for reading and thanks for any help in advance!

[Electronics Wizardy]

Can you show the network config pages, or brctl show?

 

I think the issue is that if you bridge a vm to a network adapter on thehost, you can't communicate with the host. THe solution to this is to make a ip on the bridge for the host, and don't have a ip on the network adatper.

[alexjoel]

Ignore br2-br5, they are unused. I had a 40port 4-port NIC die when I first put the machine together.

 

I thought it would work since the VMs are bridged through one interface and then Unraid is bridged to another entirely.

Edited April 4, 2020 by alexjoel
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