Same packet on different interfaces

[Asier Martínez <axierr () gmail com>]

Hi to all,
I'm trying to sniff from several wifi cards at the same time with pcap
library,
if the wifi interfaces are set for example to channel 1 and 3, there is a
chance
for both of them to read the same packet.
Anyone have an idea how I can discard duplicated packets and only process
them once?

Thank you very much,
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