Set defined parameter to value. Known parameters are as follows:| man.openbsd.org
DESCRIPTION| man.openbsd.org
DIOCSTARTStart the packet filter.DIOCSTOPStop the packet filter.DIOCADDRULE| man.openbsd.org
alias| man.openbsd.org
-4Forces ssh to use IPv4 addresses only.| man.openbsd.org
alias| man.openbsd.org