You don't need to be adding an IP address to any vmbr except the one you manage from.
The bridges work fine as long as you don't give them IP addresses
The latest proxmox. 3.4
You treat your virtual switch like a physical. Create a router VM, attach it to every vmbr. Create your acls/firewall rules, and if you want to Nat, configure that.
I run entire networks inside of vmbrs in this fashion.
You just set up a router in there somewhere connected to the vmbr 's that you want to control access to. You use routing and firewalls like any physical network. I use VyOS for my virtual router needs.
I have this set up on my server. It works.
I have a VMBR2 that is not connected to an interface.
I have a VMBR1 that IS connected to an interface.
I use a virtual router that uses VMBR1 as WAN interface
Virtual router uses VMBR2 as LAN interface
All VMs behind this router use VMBR2 as their...
If you have a virtualized router it will work to connect your networks.
The problem then lies in your routes and firewall/Nat configuration in your router
How would the dummy interface that isn't connected to a real ETH device supposed to reach the real network?
What exactly are you trying to accomplish? Why make the dummy interface at all if you want it connected to the rest of the network? Just hook it into the other vmbr devices instead...
A hardware raid controller presents the OS with a 'virtual' disk/device. The OS does not touch the raid at that point...
If you have an issue with a directory, blaming the hardware raid or saying proxmox changed something based on hardware raid is silly.
There is nothing to configure in the vmbr. I use a setup similar to this for testing. I use vyos as the router for my internal only domain. It CAN be done.
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You can configure Ubuntu to do either of those things. Ubuntu can act as a router, but it sounds like you are expecting it to automatically route the traffic.
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The first problem I see is that you gave your vmbr1 the same IP address as your Ubuntu server 1. Vmbr does not need an IP unless it is your management vmbr, like your vmbr0.
As long as vmbr1 is not connected to an ETH device, it acts as an internal virtual switch for your VMS and will do...