[Lxc-users] Failed to setup networking within container

[Derek Simkowiak]

I think this is the problem:

lxc.network.hwaddr = 00:24:1d:2f:d6:5f


You have that set to the hardware (MAC) address of your physical bridge 
device. That is wrong.

Instead, that should be the MAC address you want the container to have. 
It should be something "random" so it won't conflict with any other 
device on your network. But it's not entirely random, as there are rules 
about the prefix and format.

Check out the "configure_lxc" hook of my script, which will show you how 
to generate a random-but-valid MAC address using shell script:

http://derek.simkowiak.net/lxc-ubuntu-x/

As a quick test, try setting it to this and see if it works:

lxc.network.hwaddr = 00:24:1d:2f:e6:6f


(I simply made a trivial change to the last two parts, just to resolve 
the conflict with your physical device.)


Thanks,
Derek Simkowiak


On 01/03/2012 02:58 PM, Vedran Furač wrote:
> Hi all,
>
> I'm unable to reach anything from inside of container nor to reach its
> interface from outside. I've followed multiple howto's and documentation
> but without success.
>
> Host (Debian testing, lxc 0.7.5)
> =====
>
>
> iface br0 inet dhcp
>         bridge_ports eth0
>         bridge_fd 0
>
> br0   Link encap:Ethernet  HWaddr 00:24:1d:2f:d6:5f
> inet addr:192.168.0.59  Bcast:192.168.0.255  Mask:255.255.255.0
>
> lxc.network.type = veth
> lxc.network.flags = up
> lxc.network.link = br0
> lxc.network.hwaddr = 00:24:1d:2f:d6:5f
> lxc.network.ipv4 = 192.168.0.66/24
>
> Container (Debian stable)
> =====
>
> auto eth0
> iface eth0 inet static
>      address 192.168.0.66
>      netmask 255.255.255.0
>      network 192.168.0.0
>      broadcast 192.168.0.255
>      gateway 192.168.0.1
>
> eth0   Link encap:Ethernet  HWaddr 00:24:1d:2f:d6:5f
> inet addr:192.168.0.66  Bcast:192.168.0.255  Mask:255.255.255.0
>
> Default route:
>
> Destination     Gateway         Genmask         Flags   Iface
> default         192.168.0.1     0.0.0.0         UG      eth0
>
> Am I doing something wrong?
>
> TIA,
>
> Vedran
>
>
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