[lxc-users] Unable to connect to internet from LXC container

[Andreas Laut]

We had here same problems like you, but with public IP Addresses only.
Please post your lxc config. Our Workaround was to set a fixed net.hw 
address but maybe your problem is different.

Bet regards


Am 22.01.2014 04:29, schrieb Gandhi, Ibha (HP Software):
>
> Hi,
>
> Thanks for your reply. I am using proxy server to connect to internet.
>
> From the host I am able to ping this proxy server but not from the 
> container.
>
> Any pointers?
>
> Thanks,
>
> - Ibha
>
> *From:*lxc-users-bounces at lists.linuxcontainers.org 
> [mailto:lxc-users-bounces at lists.linuxcontainers.org] *On Behalf Of 
> *István Király
> *Sent:* Wednesday, January 22, 2014 8:32 AM
> *To:* LXC users mailing-list
> *Subject:* Re: [lxc-users] Unable to connect to internet from LXC 
> container
>
> Hello Ibha, ...
>
> To me it seems, that you have a private address for your container, 
> 10.x.x.x, and you connect the network over a bridge interface.
>
> if you are using bridging, you need a separate public-IP for your 
> container(s).
>
> If you want to connect to the internet over a single public IP (the IP 
> of your eth0 I assume) you will need to set up IP-mascarading or NAT, 
> or a reverse proxy, to translate communication between your virtual 
> LAN, and the internet.
>
> Depending on your needs, you might have also the option to use IPv6, 
> the above is for classic IPv4.
>
> Greetings, ..
>
> On Tue, Jan 21, 2014 at 7:26 PM, Gandhi, Ibha (HP Software) 
> <ibhag at hp.com <mailto:ibhag at hp.com>> wrote:
>
> Hi,
>
> I am new to LXC and networking in Ubuntu and need help urgently.
>
> I am able to ping the container from the host and vice versa.
>
> The host can connect to internet but the container cannot.
>
> I pinged gateway from container but that also doesn't work.
>
> However, output of route --n from the container is:
>
> ubuntu at root-local-machine-2:~$ route -n
>
> Kernel IP routing table
>
> Destination Gateway         Genmask         Flags Metric Ref Use Iface
>
> 0.0.0.0       10.x.x.x            0.0.0.0              UG 100    
> 0        0 eth0
>
> 10.x.x.x        0.0.0.0               255.255.x.x     U      0      
> 0        0 eth0
>
> From the host:
>
> eth0 Link encap:Ethernet  HWaddr 00:50:56:9c:24:d5
>
> UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>
> RX packets:268433 errors:0 dropped:1103 overruns:0 frame:0
>
> TX packets:37678 errors:0 dropped:0 overruns:0 carrier:0
>
> collisions:0 txqueuelen:1000
>
> RX bytes:29370538 (29.3 MB)  TX bytes:2921285 (2.9 MB)
>
> lo Link encap:Local Loopback
>
> inet addr:127.0.0.1  Mask:255.0.0.0
>
> inet6 addr: ::1/128 Scope:Host
>
> UP LOOPBACK RUNNING  MTU:65536  Metric:1
>
> RX packets:1957142 errors:0 dropped:0 overruns:0 frame:0
>
> TX packets:1957142 errors:0 dropped:0 overruns:0 carrier:0
>
> collisions:0 txqueuelen:0
>
> RX bytes:523335220 (523.3 MB)  TX bytes:523335220 (523.3 MB)
>
> lxcbr0 Link encap:Ethernet  HWaddr 00:50:56:9c:24:d5
>
> inet addr:10.x.x.x  Bcast:10.x.x.x  Mask:255.x.x.x
>
> inet6 addr: fe80::250:56ff:fe9c:24d5/64 Scope:Link
>
> UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>
> RX packets:1458768 errors:0 dropped:179 overruns:0 frame:0
>
> TX packets:767080 errors:0 dropped:0 overruns:0 carrier:0
>
> collisions:0 txqueuelen:0
>
> RX bytes:226231989 (226.2 MB)  TX bytes:127523082 (127.5 MB)
>
> vethSkshFq Link encap:Ethernet  HWaddr fe:d5:d2:af:33:89
>
> inet6 addr: fe80::fcd5:d2ff:feaf:3389/64 Scope:Link
>
> UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
>
> RX packets:616967 errors:0 dropped:0 overruns:0 frame:0
>
> TX packets:597510 errors:0 dropped:0 overruns:0 carrier:0
>
> collisions:0 txqueuelen:1000
>
> RX bytes:112249698 (112.2 MB)  TX bytes:82433706 (82.4 MB)
>
> Any help will be appreciated.
>
> Thanks,
>
> Ibha
>
>
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>
>
>
> -- 
>
> István Király
>
> +36 209 753 758
>
> LaKing at D250.hu <mailto:LaKing at D250.hu>
>
>
>
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