Re: Problem with Linux networking in 3.X kernels

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Cc set.

On Sunday 2011-12-04 15:09, Artur Fijałkowski wrote:

>Hi!
>
>On friday I found very nasty bug in 3.X kernels - vlan device does not
>work on bridge port. I don't know where to report this bug so I ask
>you for helping ;) me with this report.
>
>Detailed problem:
>If ethernet device has vlans and is incorporated as bridge port it
>completely drops incoming vlan packets. I tested this with wireshark
>and I observed:
>* when device is not bridge port vlan works normally (there is network
>connectivity via vlan interface)
>* when device is added as bridge port it still sends packets via vlan
>interface, but does not recieve them - wireshark sees packets in both
>directions, but they are dropped somewhere in kernel, because in file
>/proc/net/vlan/DEVNAME counters on incoming packets does not
>increment.
>
>I observed this problem on 2 kernels:
>* 3.1.1-gentoo
>* 3.0.6-gentoo
>With two different ethernet devices:
>*  Broadcom Nextreme IIII (tg3 kernel driver)
>*  Broadcom BCM4401-B0 (b44 kernel driver)
>
>vlan devices were created with ip link add link ... command, with vlan ID 3972.
>
>If you tell me where to report this problem and what additional info
>get I will do it.
>
>
>Thanks in advance
>AJF/WarX
>

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