[EN] Network bridge

[kole]

I have Siduction computer running from 2017, hardware is from 2011 prior to 2017 it was Aptosid. I didn't have much of issues with either. Now i have newer hardware and I would like to continue using Siduction but I am unable to configure bridge, whatever I do following instructions makes network stops working. What information I should supply in order to get some help?

[dibl]

i used this guide within the past year and it worked as expected:

https://wiki.debian.org/BridgeNetworkConnections

Can you troubleshoot each step and learn where the failure occurs?

[towo]

With the current systemd, systemd-networkd seems broken for bridge.
I had the same Problem

my nic has become a ip
my bridge was allways down, i can't get it up

Downgraded systemd to 255.5-1 (from testing) and my network is working again.

[dibl]

Interesting to see here, my systemd-networkd has been disabled (not deliberately), and the bridge and networking are working correctly.

Code: [Select]

don@dibl-MOW:~$ sudo apt policy systemd
systemd:
  Installed: 256~rc2-3
  Candidate: 256~rc2-3
  Version table:
 *** 256~rc2-3 500
        500 https://deb.debian.org/debian unstable/main amd64 Packages
        100 /var/lib/dpkg/status
don@dibl-MOW:~$ sudo ifconfig
br0: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        inet xxx  netmask 255.255.255.0  broadcast xxx
        inet6 xxx  prefixlen 64  scopeid 0x20<link>
        inet6 xxx  prefixlen 64  scopeid 0x0<global>
        ether xxx  txqueuelen 1000  (Ethernet)
        RX packets 374522  bytes 291623885 (278.1 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 223852  bytes 60413994 (57.6 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

enp0s31f6: flags=4163<UP,BROADCAST,RUNNING,MULTICAST>  mtu 1500
        ether xxx  txqueuelen 1000  (Ethernet)
        RX packets 437526  bytes 361668982 (344.9 MiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 261496  bytes 65352089 (62.3 MiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0
        device interrupt 18  memory 0xfb500000-fb520000

lo: flags=73<UP,LOOPBACK,RUNNING>  mtu 65536
        inet 127.0.0.1  netmask 255.0.0.0
        inet6 ::1  prefixlen 128  scopeid 0x10<host>
        loop  txqueuelen 1000  (Local Loopback)
        RX packets 49  bytes 4377 (4.2 KiB)
        RX errors 0  dropped 0  overruns 0  frame 0
        TX packets 49  bytes 4377 (4.2 KiB)
        TX errors 0  dropped 0 overruns 0  carrier 0  collisions 0

don@dibl-MOW:~$ systemctl status systemd-networkd
○ systemd-networkd.service - Network Configuration
     Loaded: loaded (/usr/lib/systemd/system/systemd-networkd.service; disabled; preset: enabled)
     Active: inactive (dead)
TriggeredBy: ○ systemd-networkd.socket
       Docs: man:systemd-networkd.service(8)
             man:org.freedesktop.network1(5)
   FD Store: 0 (limit: 512)