--- Begin Message ---
Hi Steve

Attached and below is an /etc/network/interfaces that should do what you want.

Just
* keep interface enp9s0f1 connected to your private subnet 192.168.20.2/23
* connect interface enp9s0f0 to your internet subnet
* connect internet VMs to vmbr1
* connect interface enp11s0f1 to your private subnet 192.168.30.2/23
* connect VMs on subnet 192.168.30.2/23 to vmbr2

If you keep the comment lines (#) they'll show up in the web interface as well.

Disclaimer: I did not test it but it should give you the right idea to go ahead.

Stefan
PS: please disregard previous attachment - this is the correct one

/etc/network/interfaces:

auto lo
iface lo inet loopback

iface enp9s0f1 inet manual
# Uplink for vmbr0

auto vmbr0
iface vmbr0 inet static
        address 192.168.20.2/23
        gateway 192.168.20.1
        bridge_ports enp9s0f1
        bridge_stp off
        bridge_fd 0
# Host Management

iface enp11s0f0 inet manual
# Uplink for vmbr1

auto vmbr1
iface vmbr1 inet manual
        bridge_ports enp9s0f0
        bridge_stp off
        bridge_fd 0
# Bridge for VMs on the Internet

iface enp11s0f1 inet manual
# Uplink for vmbr2

auto vmbr2
iface vmbr2 inet manual
        bridge_ports enp11s0f1
        bridge_stp off
        bridge_fd 0
# Bridge for VMs on network 192.168.30.0/24

iface enp9s0f0 inet manual

iface enp3s0 inet manual

iface enp2s0 inet manual


On Feb 14, 2021, at 18:29, Steve Frazier via pve-user 
<[email protected]<mailto:[email protected]>> wrote:


From: Steve Frazier <[email protected]<mailto:[email protected]>>
Subject: Re: [PVE-User] Adding an Internet NIC to existing Proxmox
Date: February 14, 2021 at 18:29:14 GMT+1
To: "[email protected]<mailto:[email protected]>" 
<[email protected]<mailto:[email protected]>>


Here is my "interfaces" file:
auto loiface lo inet loopback
iface enp9s0f1 inet manual
auto vmbr0iface vmbr0 inet static        address 192.168.20.2/23        gateway 
192.168.20.1        bridge_ports enp9s0f1        bridge_stp off        
bridge_fd 0
iface enp11s0f0 inet manual
iface enp11s0f1 inet manual
iface enp9s0f0 inet manual
iface enp3s0 inet manual
iface enp2s0 inet manual


   On Sunday, February 14, 2021, 12:14:28 PM EST, Steve Frazier via pve-user 
<[email protected]<mailto:[email protected]>> wrote:

I need some help.  I am new to Proxmox.   I have it set up now using (1) one 
NIC to an internal network of 192.168.20.0/23 and I would like to use another 
NIC I have available for the internet which has (5) available IPs.
I have attached a view of my existing network.
I would like to set up an additional (NIC) when would allow me to assign to a 
virtual server that has two virtual NICs with one being the internet and the 
other being my internal network.
While I am at it, I have another networking 192.168.30.0/24 that I would like 
to assign to an available NIC so that I could assign virtual servers to that 
NICat a later time.
Could someone please help me on how to do this
Thanks very much.


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auto lo
iface lo inet loopback

iface enp9s0f1 inet manual
# Uplink for vmbr0

auto vmbr0
iface vmbr0 inet static
        address 192.168.20.2/23
        gateway 192.168.20.1
        bridge_ports enp9s0f1
        bridge_stp off
        bridge_fd 0
# Host Management

iface enp11s0f0 inet manual
# Uplink for vmbr1

auto vmbr1
iface vmbr1 inet manual
        bridge_ports enp9s0f0
        bridge_stp off
        bridge_fd 0
# Bridge for VMs on the Internet

iface enp11s0f1 inet manual
# Uplink for vmbr2

auto vmbr2
iface vmbr2 inet manual
        bridge_ports enp11s0f1
        bridge_stp off
        bridge_fd 0
# Bridge for VMs on network 192.168.30.0/24

iface enp9s0f0 inet manual

iface enp3s0 inet manual

iface enp2s0 inet manual

--- End Message ---
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