sysctls go away on network interfaces being removed. Which includes not only ppp et.al., but all sorts of tunnels, etc. IOW, you can wait for it to happen - in a lot of setups it will. And in case of e.g. ipv4 sysctls we are talking about >2Kb allocated on amd64, so kmalloc() will pick full pages for each (per-interface) set of sysctls...
Thanks for the info, Al. Reassigning.
Patch posted 11/23 - security issue - moving to canfix list.
A fix for this problem has just been committed to the RHEL3 U7 patch pool this evening (in kernel version 2.4.21-37.12.EL).
A fix for this problem has also been committed to the RHEL3 E7 patch pool this evening (in kernel version 2.4.21-37.0.1.EL).
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2006-0140.html