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Red Hat Enterprise Linux 9 Essentials Book now available.

Purchase a copy of Red Hat Enterprise Linux 9 (RHEL 9) Essentials

Red Hat Enterprise Linux 9 Essentials Print and eBook (PDF) editions contain 34 chapters and 298 pages

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4.7.2. Synchronizing sysctl

The sysctl file is only modified once in most situations. This file is read at boot time and tells the kernel to turn on packet forwarding.


If you are not sure whether or not packet forwarding is enabled in the kernel, see Section 2.5, “Turning on Packet Forwarding” for instructions on how to check and, if necessary, enable this key functionality.

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