Are Capture Filters Implemented in Software or the Network Card?

[X Q <xq1xq1xq1 () gmail com>]

This is a question fairly deep in the guts of Wireshark that I could not
find an answer to.

When a capture filter is implemented are ALL packets sent to
Wireshark/Dumpcap/TShark at the software level for filtering

or

are the packets not matching the filter shedded/ignored by the Network
Interface card itself thus reducing strain on the CPU/Network Fabric?

I look forward to hearing from you!

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