Should I use eno1 for cloudbr1 for public access then… and eno2 for private 
network?

>From the documentation I see they're referring to "eth0" in both cases.
Am I misinterpreting something?


auto lo
iface lo inet loopback

# The primary network interface
auto eth0
iface eth0 inet manual

auto eth0.200
iface eth0 inet manual

# management network
auto cloudbr0
iface cloudbr0 inet static
    bridge_ports eth0
    bridge_fd 0
    bridge_stp off
    bridge_maxwait 1
    address 192.168.42.11
    netmask 255.255.255.240
    gateway 192.168.42.1
    dns-nameservers 8.8.8.8 8.8.4.4
    dns-domain lab.example.org

# guest network
auto cloudbr1
iface cloudbr1 inet manual
    bridge_ports eth0.200
    bridge_fd 0
    bridge_stp off
    bridge_maxwait 1

Sent from Outlook for Android<https://aka.ms/AAb9ysg>
________________________________
From: Wei ZHOU <[email protected]>
Sent: Thursday, February 1, 2024 5:40:35 PM
To: [email protected] <[email protected]>
Subject: Re: Why do the bridges kill the network witht this config?

Two bridges (cloudbr0/cloudbr1) with same interface (eno1) ?

在 2024年2月1日星期四,Javi Moncayo <[email protected]> 写道:

> Hi guys,
>
> I am using Ubuntu 20 I have two interfaces. One physical (eno1) with
> internet access, and eno2 is a vRack for the private network.
>
> On the configuration below, if I use eno2 as interface for both bridges, I
> can create VMs and they can ping each other but I do not have internet
> access. However, if I set the interface to eno1, the network crashes...
>
> What am I missing? How should my configuration look like?
>
> Thanks in advance!
>
> network:
>     version: 2
>     ethernets:
>         eno2:
>             dhcp4: no
>             addresses:
>               - 192.168.0.1/16
>         eno1:
>             accept-ra: false
>             addresses:
>             - xxxx:xxxx:xxx:xxxx::/56
>             dhcp4: true
>             match:
>                 macaddress: ac:1f:6b:df:50:78
>             nameservers:
>                 addresses:
>                 - xxxx:xxxx:x:xxx::1
>      bridges:
>         cloudbr0:
>             addresses: [192.168.1.1/16]
>             gateway4: 192.168.255.255
>             nameservers:
>                 addresses: [8.8.8.8]
>             interfaces: [eno1]
>             dhcp4: false
>             dhcp6: false
>             parameters:
>                 stp: false
>                 forward-delay: 0
>         cloudbr1:
>             interfaces: [eno1]
>             dhcp4: false
>             dhcp6: false
>             parameters:
>               stp: false
>               forward-delay: 0
>
> eno1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         inet xx.xxx.xx.xxx  netmask 255.255.255.0  broadcast xx.xxx.xx.xxx
>         inet6 xxxx::xxxx:xxxx:xxxx:xxxx  prefixlen 64  scopeid 0x20<link>
>         inet6 xxxx:xxxx:xxx:xxxx::  prefixlen 56  scopeid 0x0<global>
>         ether xx:xx:xx:xx:xx:xx  txqueuelen 1000  (Ethernet)
>         RX packets 441753  bytes 142093871 (142.0 MB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 425365  bytes 66792387 (66.7 MB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
>
> eno2: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
>         inet 192.168.0.1  netmask 255.255.0.0  broadcast 192.168.255.255
>         ether ac:1f:6b:df:50:79  txqueuelen 1000  (Ethernet)
>         RX packets 29006  bytes 2390888 (2.3 MB)
>         RX errors 0  dropped 0  overruns 0  frame 0
>         TX packets 24554  bytes 1715980 (1.7 MB)
>         TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
>

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