VM's on br0 cannot access the internet after 6.12.0

[Celsian]

I have two VM's, Debian and Win10. Neither can ping any ip address other than the unraid ip. Pinging the router or any external address fails. Here is my network config:

[Celsian]

I resolved this issue by changing my network model for my VM's from 'virtio-net' to 'virtio'

 

Does anyone know why virtio-net does not appear to work anymore?

Edited July 5, 2023 by Celsian
This did not resolve the issue for others and stops working after an unRAID restart.

[Celsian]

Turns out the problem was actually with my network settings, when I restarted my unRAID server, the network connections stopped working again for both VM's. To resolve it I discovered that under network settings I had to enable bonding for eth0.

I enabled bonding for the NIC, set the mode to backup and only included eth0 in the bond.

After starting the VM's again, their network connections started working and the connections continued working after an unRAID restart.

Edited July 5, 2023 by Celsian

[meep]

Curious as to how you figured that out. Was it documented somewhere? Seems very counter intuitive.

 

Anyway, I had the same issue when I upgraded from 6.11.5 to 6.12.2 and was super-frustrated until I found you post. Many thanks.

[Defylimits]

Well I had the same issue, thanks Celsian,

Have to agree with Meep tho, very counter intuitive, been bugging me since uprgraded to 6.12.2. Weirdly it didn't get resolved when I tried to downgrade!

[Charlie W]

Hi, 

 

I think I am having the same problem, but not certain as I have only tried setting up a VM this weekend, after I had already updated to 6.12. So I've not yet been able to get it running at all, I checked my network settings and bonding appears to be on already. Do these settings look correct for what you guys used to get it working again?

 

 

Thanks

Charlie

 

Edited July 18, 2023 by Charlie W

[SP67]

Had the same situation. Really appreciate you took the time to come back and describe how to solve it. 

 

Also, crear the cache or use private mode if vnc is still not working after this change. 

[1Kurgan1]

Just ran into this issue myself, the above fix unfortunately did not apply.

I already had bonding setup. I was able to get it working by swapping my VM over to virt0 for now. But that means it no longer has direct visibility of my network. 

For now this works for me, I'll have to plug more at it later, but I'm thinking it might just be an issue with this version of unRAID.