[lxc-users] LXC networking stop working between containers and real network

[Ruzsinszky Attila]

Hi Alex,

Thanks for your information!

I'll test soon what you wrote.
I did a workaround. I forgot the lxcbr0 bridge and my LXC containers were
"connected" directly into my vbr0 in OVS. It was almost perfect without any
scripting except I has to tagging those interface and I did it by hand
(tag=myVLANid).
It is working perfectly.

Is that a bug or a feature with Ubuntu's bridge? Or kernel problem? Under
Fedora 23 everything is working but I think more clear the direct connected
containers than double bridge (lxcbr0 under vbr0). I think theoretically
both of them have to work so I don't understand exactly why not.

Here is my LXC container's config:
# Network configuration
lxc.network.type = veth
lxc.network.flags = up
#lxc.network.link = lxcbr0
lxc.network.link = vbr0
lxc.network.veth.pair=veth-lub4
#lxc.network.hwaddr = 00:16:3e:9f:1f:b8

OVS:
Bridge "vbr0"
        Port "vbr0"
            Interface "vbr0"
                type: internal
        Port "mgmt0"
            tag: 999
            Interface "mgmt0"
                type: internal
        Port "veth-lub4"
            tag: 800
            Interface "veth-lub4"
        Port "gre0"
            Interface "gre0"
                type: gre
                options: {remote_ip="192.168.52.141"}
        Port "mgmtlxc0"
            tag: 800
            Interface "mgmtlxc0"
                type: internal
        Port "veth-lub5"
            tag: 800
            Interface "veth-lub5"
        Port "veth-lub6"
            tag: 800
            Interface "veth-lub6"
    ovs_version: "2.0.2"

On Fedora 23 the normal config:
# Network configuration
lxc.network.type = veth
lxc.network.flags = up
lxc.network.link = lxcbr0
lxc.network.hwaddr = 00:16:3e:9f:1f:b8

 Bridge "vbr0"
        Port "lxcbr0"
            tag: 800
            Interface "lxcbr0"
        Port "mgmtlxc0"
            tag: 800
            Interface "mgmtlxc0"
                type: internal
        Port "vsar2_111"
            tag: 100
            Interface "vsar2_111"
        Port "vlan10"
            tag: 10
            Interface "vlan10"
                type: internal
        Port "vsar2_a1"
            tag: 999
            Interface "vsar2_a1"
        Port "mgmt0"
            tag: 999
            Interface "mgmt0"
                type: internal
        Port "vsar3_111"
            tag: 100
            Interface "vsar3_111"
        Port "vbr0"
            Interface "vbr0"
                type: internal
        Port "vsar3_a1"
            tag: 999
            Interface "vsar3_a1"
        Port "gre0"
            Interface "gre0"
                type: gre
                options: {remote_ip="192.168.52.141"}
        Port "vx0"
            Interface "vx0"
                type: vxlan
                options: {remote_ip="192.168.52.141"}

TIA,
Ruzsi
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