[lxc-users] lxcbr0 Always 10.0.3.1

[Fajar A. Nugraha]

You're not using lxcbr0 for its intended purposes.

If you've used vmware/virtualbox before, lxcbr0 is similar to that of
NAT networking. It's an automated setup (with the help of dnsmasq and
iptables) to facilitate guest/vm/container to be able to share the
hosts's internet access, but not intended for outside world to access
the containers.

Since it looks like you want your containers to be part of your LAN
directly (without NAT), create your own bridge (e.g. br0). Then set
your containers to use that bridge instead of lxcbr0 (i.e. by editing
the container's config and /etc/lxc/default.conf).

-- 
Fajar


On Sat, Oct 3, 2015 at 3:47 AM, Nicholas J Ingrassellino
<nick at lifebloodnetworks.com> wrote:
> Thanks for the suggestion.
>
> Changing /etc/default/lxc-net allows me to add the host to my local network
> (I can SSH in now). However this method does not allow me to set a gateway
> nor DNS servers. If I could control this from /etc/network/interfaces (like
> I have in the past, still not sure why it stopped working) this would be so
> much simpler.
>
> Without gateway and DNS I can not get out to the Internet on this host.
>
> Nicholas J Ingrassellino
> LifebloodNetworks.com
>
>
> On 10/02/2015 04:09 PM, Stéphane Graber wrote:
>
> Sounds like you should be configuring /etc/default/lxc-net
>
> On Fri, Oct 02, 2015 at 03:03:35PM -0400, Nicholas J Ingrassellino wrote:
>
> I have a fresh install of Ubuntu 14.04.3. On it (from the
> /ubuntu-lxc/stable/ PPA) I have installed LXC. In my
> //etc/network/interfaces/ I have setup:
>
>    /auto lo/
>    /iface lo inet loopback/
>
>    /auto em1/
>    /iface em1 inet manual/
>
>    /auto lxcbr0/
>    /iface lxcbr0 inet static/
>    /    address 10.4.0.10/
>    /    netmask 255.255.255.0/
>    /    gateway 10.4.0.1/
>    /    dns-nameservers 10.4.0.1/
>    /    bridge_ports em1/
>
>
> /lxcbr0/ shows up in /ifconfig/ however it always has the IP of /10.0.3.1/.
> This happens despite the fact I have configured a static IP (above).
>
> Not sure where to turn from here. I am following my own tutorial
> <http://blog.lifebloodnetworks.com/?p=2118> which I have used many times in
> the past to setup an LXC host. Why it does not work this time I have no
> idea...
>
> Nicholas J Ingrassellino <mailto:nick at lifebloodnetworks.com>
> LifebloodNetworks.com <http://www.lifebloodnetworks.com/>
>
> The idea that I can be presented with a problem, set out to logically solve
> it with the tools at hand, and wind up with a program that could not be
> legally used because someone else followed the same logical steps some years
> ago and filed for a patent on it is horrifying.
> ‐ John Carmack, software patents
>
> I don't want to be human. I want to see gamma rays, I want to hear X-rays,
> and I want to smell dark matter. Do you see the absurdity of what I am? I
> can't even express these things properly, because I have to— I have to
> conceptualize complex ideas in this stupid, limiting spoken language, but I
> know I want to reach out with something other than these prehensile paws,
> and feel the solar wind of a supernova flowing over me. I'm a machine, and I
> can know much more. I could experience so much more, but I'm trapped in this
> absurd body.
> ‐ John Cavil, Battlestar Galactica
>
> Here's to the crazy ones. The misfits. The rebels. The troublemakers. The
> round pegs in the square holes. The ones who see things differently. They're
> not fond of rules. And they have no respect for the status quo. You can
> quote them, disagree with them, glorify, or vilify them. About the only
> thing you can't do is ignore them. Because they change things. They invent.
> They imagine. They heal. They explore. They create. They inspire. They push
> the human race forward. Maybe they have to be crazy. How else can you stare
> at an empty canvas and see a work of art? Or sit in silence and hear a song
> that's never been written? Or gaze at a red planet and see a laboratory on
> wheels? While some see them as the crazy ones, I see genius. Because the
> people who are crazy enough to think they can change the world, are the ones
> who do.
> ‐ Steve Jobs
>
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