[lxc-users] Problem with bridge mode and static ip

[Mathew Pang]

Hi Andrea,

If I am understanding your issue correctly, I ran into the same problem
when running containers inside of an ESXi server. The problem has to do
with the virtual switch that the server is connected to. It only expects
its ESXi server to be connected to it. Therefore, when it sees packets
destined for MAC addresses that are not the ESXi server, it drops them. I
fixed this by setting the switch in promiscuous mode.

I found the solution here:
http://serverfault.com/questions/473438/lxc-vm-access-outside-the-host/473442#473442


On Wed, Aug 10, 2016 at 6:37 AM, Andrea <andreamssbs at gmail.com> wrote:

> Hello everyone,
>
> my situation is a VMware esxi 6 server with a new fresh installation of
> the last Ubuntu 16.04.1 iso distribution.
> I updated everything and I followed these articles to use my container
> with an local network ip:
> https://bayton.org/2016/05/lxd-zfs-and-bridged-networking-on-ubuntu-16-04-
> lts/
> https://www.simpleprecision.com/ubuntu-16-04-lxd-networking-simple-bridge/
>
> my lan is:
>
> Router (dhcp server): ip 10.9.4.54 / 26
>
> Ubuntu 16.04: ip 10.9.4.1
> Container1 (ubuntu 14.04): ip 10.9.4.11
>
>
> the issue is that from xential the ping to the container responds also
> with ssh.
>
> from the container the ping to xential works but to the router or any
> other in the lan or internet doesn't work.
>
> I can also communicate with ssh between both.
>
> here some configuration:
>
>
> *this is the interface file of Xential host :*
> auto br0
> iface br0 inet static
> address 10.9.4.1
> netmask 255.255.255.192
> network 10.9.4.0
> broadcast 10.9.4.63
> gateway 10.9.4.54
> dns-nameservers 8.8.8.8 8.8.4.4
> bridge_ports ens33
>
> iface ens33 inet manual
>
>
>
> *ifconfig:*
>
> br0       Link encap:Ethernet  HWaddr 00:0c:29:70:43:90
>           inet addr:10.9.4.1  Bcast:10.9.4.63  Mask:255.255.255.192
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:4957 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:2722 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:915910 (915.9 KB)  TX bytes:370097 (370.0 KB)
>
> ens33     Link encap:Ethernet  HWaddr 00:0c:29:70:43:90
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:4753 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:2900 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:909736 (909.7 KB)  TX bytes:438083 (438.0 KB)
>
> lo        Link encap:Local Loopback
>           inet addr:127.0.0.1  Mask:255.0.0.0
>           UP LOOPBACK RUNNING  MTU:65536  Metric:1
>           RX packets:160 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:160 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1
>           RX bytes:11840 (11.8 KB)  TX bytes:11840 (11.8 KB)
>
> vethOP7FMJ Link encap:Ethernet  HWaddr fe:9f:5a:06:f9:c3
>           UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>           RX packets:213 errors:0 dropped:0 overruns:0 frame:0
>           TX packets:117 errors:0 dropped:0 overruns:0 carrier:0
>           collisions:0 txqueuelen:1000
>           RX bytes:18845 (18.8 KB)  TX bytes:15729 (15.7 KB)
>
>
>
> *lxc profile show default*
>
> name: default
> config: {}
> description: Default LXD profile
> devices:
>   eth0:
>     name: eth0
>     nictype: bridged
>     parent: br0
>     type: nic
>
>
>
> The container:
>
> */etc/network/interface*
>
> # source /etc/network/interfaces.d/*.cfg
>
> auto eth0
> iface eth0 inet static
> address 10.9.4.11
> network 10.9.4.0
> broadcast 10.9.4.63
> gateway 10.9.4.54
> dns-nameservers 8.8.8.8
>
>
>
> What else can I do ???
>
> thanks
> Andrea
>
>
>
>
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>



-- 
Mathew Pang
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