sysctl -e feature was implemented in procps:
* Fri Mar 23 2001 Bill Nottingham <firstname.lastname@example.org>
- add a '-e' to sysctl to ignore errors (#31852)
Should initscrips Require a recent enough procps as sysctl -e is being used there?
Closing bugs on older, no longer supported, releases. Apologies for any lack of
Realistically, any version of procps these days will be ok.