libiperf-dev - 3.9-1+deb11u1 main

Iperf3 is a tool for performing network throughput measurements. It can
test either TCP or UDP throughput.
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This is a new implementation that shares no code with the original
iperf from NLANR/DAST and also is not backwards compatible.
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This is the development package which contains headers files and the
static iperf library.