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A comment on Curious case of Martian traffic in Linux. Parent comment

Re:Curious case of Martian traffic in Linux by usovalx on Tuesday May 09, 2023 @01:22PM (#35877512)
May dhcp client/servers are using raw sockets and will thus bypass incorrect firewall config/martian packet filtering.
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Re:Curious case of Martian traffic in Linux by schoen on Tuesday May 09, 2023 @01:26PM (#35877579)
Yes, I forgot about that but you're right that that's the typical implementation method.

So the DHCP case does not necessarily need any special kernel support (other than not prefiltering before the raw socket).

Thanks for the correction.

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