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

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i writing python program needs listening traffic on networking devices , identify packets based on incoming interface. listen on interfaces started capture without specify device, unable denote interface of particular packet. how done?

i assume mac address sufficient information you.

the first 6 octets of packet destination mac address, followed 6 octets of source mac address.

source

802.3 ethernet frame structure


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