[mythtv-users] Network Bridging my Ceton InfiniTV 4

Tom Bongiorno two.bits.11 at gmail.com
Tue Aug 9 01:54:13 UTC 2011

On Mon, Aug 8, 2011 at 9:28 PM, Tom Bongiorno <two.bits.11 at gmail.com> wrote:
> On Mon, Aug 8, 2011 at 9:11 PM, Ronald Frazier <ron at ronfrazier.net> wrote:
>> On Mon, Aug 8, 2011 at 7:35 PM, Tom Bongiorno <two.bits.11 at gmail.com> wrote:
>>> Thanks for the input.  I did know and understand just about everything
>>> you said.  I guess I knew more than I thought.  From what I have read
>>> and witnessed, the bridge takes on the lowest MAC address of all the
>>> interfaces, and my eth0 is pretty high starting with f4.  The Ceton
>>> MAC address is almost always lower than eth0.  Since the ctn0 is
>>> random, then br0 is random.  It may not be possible to set an IP
>>> reservation in my router.  I tried the bridge_hw option to set the br0
>>> MAC to that of eth0, but I get a "SIOCSIFHWADDR: Operation not
>>> supported" error.
>> I see. I didn't know how it picked it. Have you tried the following commands:
>> ifconfig br0 hw ether 00:0a:e7:2c:44:2a
>> or
>> ip link set br0 address 00:0a:e7:2c:44:2a
>> one issue might be that you need to change it before the interface is
>> brought up. The page where I got these commands (
>> http://backreference.org/2010/07/28/linux-bridge-mac-addresses-and-dynamic-ports/
>> ) suggests using:
>>  post-up ip link set br0 address 00:0a:e7:2c:44:2a
>> in your /etc/network/interfaces. Up not sure you'd want to do it after
>> it's up. Maybe use pre-up instead? Don't know...just guessing (my
>> master backend is busy the rest of the evening, so I can't experiment
>> on mine)
>> --
>> Ron Frazier
>> _______________________________________________
>> mythtv-users mailing list
>> mythtv-users at mythtv.org
>> http://www.mythtv.org/mailman/listinfo/mythtv-users
> This actually worked for me:
> auto lo
> iface lo inet loopback
> auto eth0
> iface eth0 inet dhcp
>        hwaddress ether 00:01:01:01:01:01
> auto br0
> iface br0 inet dhcp
>        bridge_ports eth0 ctn0
>        bridge_fd 0
>        bridge_stp off
> Do you see any potential problems.  The Ceton card does not seem to
> support MAC address overrides, but my NIC does.  I assigned a MAC that
> is extremely low.  Now I can do all my IP reservations in my router.
> -Tom

Nix that, it didn't work.  I couldn't get out of the box for some reason.


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