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Thread: LXC Bridged Networking on Same Network as Host - Help

  1. #1
    Join Date
    Mar 2013

    LXC Bridged Networking on Same Network as Host - Help

    Running 12.04.2 LTS.
    I can ping out from/connect ssh into the host but can't ping anywhere except to the host from my container.
    I can ping to the container from the host but not from anywhere else.
    I want the container to have an address on the same network as the host.
    The container somehow gets a DHCP lease. Not sure how.
    I've set things up thusly:
    The name of the container is "spam" (this will be a test container for some spamassassin stuff)

    Host networking config:
    auto br0
    iface br0 inet dhcp
    bridge_ports eth0
    bridge_stp off
    bridge_fd 0
    bridge_maxwait 0

    /var/lib/lxc/spam/config config (networking part): = 00:16:3e:13:c1:a0
    lxc.utsname = spam

    Container networking config:
    auto eth0
    iface eth0 inet dhcp

    Host's NIC is set to promisc mode on.

    Set net.ipv4.ip_forward=1 in /etc/sysctl.conf (don't now if this was necessary, but someone somewhere said it was).

    Set USE_LXC_BRIDGE="false" in /etc/default just to take that out of the picture and use my own br0.

    Based on what I've seen online, this should get things working the way I want. Is there anything I'm missing that's preventing it from working? I've found lots of old stuff from previous builds of LXC, but it looks like the 12.04 and 12.10 builds are supposed to make things much easier, so I'm not sure what info is relevant from the older tutorials.

    Thank you.
    Last edited by jeff808; March 26th, 2013 at 03:23 AM.

  2. #2
    Join Date
    Mar 2013

    Re: LXC Bridged Networking on Same Network as Host - Help


    Would really like some help with this since I want to get LXC going. Maybe it should've gone in the networking section...?


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