See below man page fix - one of the given examples in sysctl.8 doesn't work:
# sysctl net.inet.tcp.baddynamic=+748,6000-6999 sysctl: cannot mix +/- with full list Holger Index: sbin/sysctl/sysctl.8 =================================================================== RCS file: /cvs/src/sbin/sysctl/sysctl.8,v retrieving revision 1.203 diff -u -p -u -r1.203 sysctl.8 --- sbin/sysctl/sysctl.8 20 Jul 2016 09:15:28 -0000 1.203 +++ sbin/sysctl/sysctl.8 27 Jul 2016 20:28:50 -0000 @@ -496,7 +496,7 @@ a hyphen may be used to specify a range .Pp It is also possible to add or remove ports from the current list: .Bd -literal -offset indent -# sysctl net.inet.tcp.baddynamic=+748,6000-6999 +# sysctl net.inet.tcp.baddynamic=+748,+6000-6999 # sysctl net.inet.tcp.baddynamic=-871 .Ed .Pp
