[lxc-users] LXD container with NIC in promiscuous mode

Felipe fmbrieva at gmail.com
Thu May 26 16:25:26 UTC 2016

If nictype is bridged (see my "profile_br1"):

name: profile_br1
config: {}
description: Bridge br1
    name: eth1
    nictype: bridged
    parent: br1
    type: nic

NIC eth1 in the container  doesn't work in promiscuous mode.

So my solution is pass a physical interface (in promiscuous mode) to the
container (see my profile "mirror"):

name: mirror
config: {}
description: Mirror Port
    nictype: physical
    parent: eth1-mirror
    type: nic

and now container sees all traffic from mirror port.

if someone has a better solution I'm interested in knowing , thanks.

Now i can try to install SecurityOnion on a LXD conainer :)

2016-05-26 12:23 GMT+02:00 Felipe <fmbrieva at gmail.com>:

> I want to use a container with a NIC in promiscuous mode for capturing all
> the traffic from a mirror port.
> I have:
> - LXD server with two bridge "br0" and "br1". ("br1" configured as PROMISC
> with interface eth1 as PROMISC)
> - Container with two interfaces "eth0" and "eth1". ("eth1" configured as
> I can see all traffic from mirror port in LXD Server with "br1" and "eth1"
> but i cann´t see traffic in the container. Why?
> When container starts a new interface is created in LXD Server for bridge
> "br1"  (new interface: veth4Q0L0U)
>     bridge name     bridge id               STP enabled     interfaces
>     br1                 **************                   no
> eth1
>     veth4Q0L0U
> Also i have setup veth4Q0L0U as PROMISC but i cann´t see traffic from
> mirror port in the container.
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