I have a host with qemu and bridge (PC -> eth0 -> br0 -> VM):

brctl addbr br0;
ip link set link up br0;
ip link set dev br0 up
brctl addif br0 eth0; ip link set dev br0 up; ip link set link up br0;

At a random time the interface eth0 stops working, however br0 is still working! There are no logs or messages! :-(

  • look like to use /etc/network/interfaces solved
    – biozit
    Jan 25, 2021 at 17:03
  • It sounds like you found the solution on your own? If so, please use the Answer box below so that future readers know what the solution was. Thank you!
    – Jeff Schaller
    Mar 26, 2021 at 20:13

1 Answer 1


Using the file /etc/network/interfaces solved the issue.

  • How did using it solve the issue? Can you add something to your answer that could help future readers trying to deal with the same problem? Apr 8, 2021 at 16:45

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