How do you Identify the interface of a packet while listening to network traffic on all devices?

Question

I am writing a python program that needs to listening to traffic on all networking devices and identify packets based on their incoming interface. To listen on all interfaces I started my capture without specify a device, but I am unable to denote the interface of a particular packet. How is this done?

score 2 · Accepted Answer · edited May 23 '17 at 12:01

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I assume that the MAC address is sufficient information for you.

The first 6 octets of a packet is the destination MAC address, which is immediately followed by the 6 octets of source MAC address.

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edited May 23 '17 at 12:01

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answered May 01 '11 at 01:20

Matt Ball

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using the code from the post below I can determine the MAC to device name; are you aware of another way that will be able to determine this information without being run on the capturing machine? http://stackoverflow.com/questions/159137/getting-mac-address – amadib May 01 '11 at 01:42

How do you Identify the interface of a packet while listening to network traffic on all devices?

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