/etc/sysctl.conf
sysctl.conf5
Sysctl variables to set at system startup
Overview
sysctl.conf is made up of sysctl(8) variable assignments (variable=value) with comments designated by a hash mark (‘#’).
/etc/sysctl.conf is read at system startup by rc(8) early on in the boot sequence.
Files
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/etc/examples/sysctl.conf
Examples
To turn on IP forwarding, one would use the following line:
net.inet.ip.forwarding=1
To cause the kernel to reboot on a panic, instead of dropping into the debugger, the following can be used:
ddb.panic=0
Releases
58 releases since OpenBSD 2.4; the text changed 10 times.