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I have a simple sniffer of packets using Python and pcapy.

pc = pcapy.open_live(str(self.port), max_bytes, promiscuous, read_timeout)
#My problem is here
pc.setfilter('???')
pc.loop(-1, self.recv_pkts)

I need to drop all IPv6 packets and capture everything else (including pure L2 packets etc). It should be possible to do so using setfilter() function, however I can't find any example of how to pass everything besides. I really don't want to manually parse each packet in python and check that it's not IPv6

Anto
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Konstantin
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1 Answers1

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pc.setfilter('not ip6')

Reference: http://www.tcpdump.org/manpages/pcap-filter.7.html

Robᵩ
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