Added Second NIC card can't get it active.

michaeld

New Member
Nov 5, 2022
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Hi any help would be greatly appreciated I'm running Proxmox on PC with a single NIC car. I want to setup pfSense or OPNSense - I purchased a dual nic 1000/100/10. Proxmox reconized the cards as i can now see both ports. I have link lights on the card and the network switch.

I've configured the card ports with VMBR1/enp4s6f0 CIDR 10.10.10.252/24 and VRBR3/enps6f1 CIDR 10.10.10.253/24 and both cards show no as not active.

VMBR1/enp30 CIDR 10.10.10.251.24
I went into t my test VM windows 10 after setting up the card and confirmed that i ca not get out to the internet.

I've tired running an Ifup VMBR1 and I get a vmbr1: skipping port enp4s6f1, invalid ether addr 00:00:00:00:00:00

Everything seems to be setup correctly however I can't figure out how to get the cards to show active. Any help would be gladly appreciated.

MD

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Hello,
you can not (stable - without using additional low-level magic) have more than one NIC on one host in the same network. Routing will not work stable. It will work sometimes (for some IP packages) - and this makes debugging really hard.

Remove two of the three IP addresses of 10.10.10.251/252/253!

Usually independent bridges are put into different networks! So a more usual way would be to have 10.10.10.x/24 10.10.11.x/24 and 10.10.12.x/24. This is the only way to get a chance to control packet flow between them.

Best regards
 
Last edited:
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In my interfaces I have stanzas like
Code:
auto vmbr3
iface vmbr3 inet static
        address 10.3.16.4/16
        gateway 10.3.12.254
        bridge-ports enp4s0
        bridge-stp off
        bridge-fd 0
# san

auto vmbr1
iface vmbr1 inet manual
        bridge-ports enp6s0.1
        bridge-stp off
        bridge-fd 0
Please compare. Perhaps a reboot helps. Then repost your current /etc/network/interfaces again and add the output of ip address show. Please use text in CODE-tags instead of images if possible.

Just for completeness as its not clear to me: outbound connections via 10.10.10.1 do work? Things like apt update do work?
 

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