I tried this with Philip's config, but I still can't reproduce this, I'm
afraid. I launch a VM with two network cards, like this:
qemu-system-x86_64 -enable-kvm -m 2048 -snapshot -drive file=/srv/vm
/adt-vivid-amd64-cloud.img,if=virtio -net nic,model=virtio -net user
-net nic,vlan=1,macaddr=10:10:10:10:10:10
This is a standard cloud image, thus eth0 comes pre-configured:
$ cat /etc/network/interfaces.d/eth0.cfg
# The primary network interface
auto eth0
iface eth0 inet dhcp
I added Philip's config:
$ cat /etc/network/interfaces.d/br.cfg
#iface eth1 inet manual
auto br0
iface br0 inet static
address 192.168.1.5
netmask 255.255.255.0
gateway 192.168.1.1
bridge_ports eth1
bridge_stp off
bridge_maxwait 0
bridge_fd 0
NOTE: I tested this with and without the "iface eth1 inet manual"
stanza, it works in both cases. Philip's config refers to "bridge_ports
eth1" and there's no apparent ifupdown config for eth1. I don't know
about Timo's config, as this is apparently not the complete interfaces
file.
I also tried with a single network card and bridge, by removing
/etc/network/interfaces.d/eth0.cfg and having only
$ cat /etc/network/interfaces.d/br.cfg
auto br0
iface br0 inet dhcp
bridge_ports eth0
This now uses br0 as the "primary" connection, gets DHCP and
connectivity, etc.
So I'm afraid I really need some precise information about:
* How many network cards do you have, and which is connected to what
* Your complete /etc/network/interfaces{,.d/*} configuration
Or perhaps you are able to reproduce this in a VM yourself?
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https://bugs.launchpad.net/bugs/1430675
Title:
fails to set up a bridged network interface
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