How To Virtual Networking Between VMs

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GaryDapogee

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Dec 23, 2023
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Hi, i'm noob on this platform and not so much knowledgeable in networking, and I'm not sure on the technical terms, or names to type in or search for.

I hope someone can help out on this one.

The Setup:
- I have a mini-pc with 4 physical ports.
- Physical Port 4 is bridged with vmbr0
- Physical Port 1 is bridged with vmbr1 (LAN/WAN on the same physical port, WAN is on `eth0.10` - I watched a youtube video to configure this)
- vmbr0 is not used on any VMs, I only use the port in accessing the PVE admin
- vmbr1 is being used with OpenWrt VM, configured and working

I want to achieve:
- Create a 2nd VM inside the PVE, and connect to OpenWrt VM's LAN without going out off the physical port, but tap to OpenWrt LAN within the PVE, Is this possible?
- So that the 2nd VM will get DHCP IP off the OpenWrt VM?
- The 2nd VM will be providing services on the local subnet
 
Last edited:
You could create a vmbr2, not attach it to a physical NIC. Then add a virtual NIC your OpenWRT VM is using for LAN to vmbr2. Other VMs/LXCs attached to vmbr2 then could access OpenWRTs LAN.
 
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Dunuin said:
You could create a vmbr2, not attach it to a physical NIC. Then add a virtual NIC your OpenWRT VM is using for LAN to vmbr2. Other VMs/LXCs attached to vmbr2 then could access OpenWRTs LAN.
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Hi, thanks!

I tried, but how am I supposed to see the vmbr2 inside OpenWrt?

I tried in OpenWrt, by going to Network > Device > Add device configuration.

I'm really noob at this, and not sure where to go from here.
 
Thanks a mil! I finally made it work.

I was not looking at the right place.

Okay, so I had to actually go to the Proxmox VE admin ui, and go to the VM configuration, then add the virtual nic from there one.
 
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