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You can configure the adapter to allow VLAN tag to pass thru Windows* Registry Settings. Please refer to website below for details:
Hope this is helpful.
Thank you for the reply.
As I wrote in the post above, we are using Linux - not windows.
So we need a solution for the igb driver in Linux.
I assume it will be in sort of ethtool feature enable/disable or driver rebuild using other flags.
We delved into the driver and found no solution yet.
We also found this question already been raised by others in several mailing forums, but no answer been given yet.