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I'm checking my linux server's firewall and I'm seeing

"....IN=eth0 OUT= MAC=00:26:a9:7b:c9:30:00:17:0f:ac:6a:80:08:00"...

As far as I know MAC addresses have 12 Characters. Why are there 28 characters in front of MAC=?

Thanks

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migrated from stackoverflow.com Mar 7 '11 at 13:32

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1 Answer 1

6 bytes destination MAC, 6 bytes source MAC, 2 bytes frame type.

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Thanks, could you please break up each part and tell me what the frame type is? I just can't work out how 28 characters represent 3 bytes. –  Anonymous Mar 7 '11 at 13:14
    
00:26:a9:7b:c9:30 - Destination MAC, 00:17:0f:ac:6a:80 - Source MAC, 08:00 - Frame type (See iana.org/assignments/ethernet-numbers - your frame type is 0x0800 aka IPv4) –  Erik Mar 7 '11 at 13:25

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