Reference

privbind(1) on Linux

The text c07e5170ca51, as Debian 11 (Bullseye), Debian 10 (Buster), Debian 9 (Stretch), Debian 8 (Jessie), Debian 7 (Wheezy), Debian 6.0 (Squeeze), Debian 5.0 (Lenny) shipped it. The page shows this text now.

allow an unprivileged application to bind with reserved ports.

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privbind(1) on Linux now