I am trying to set the following to 0 and running SLES 11 SP3

- net.ipv4.conf.all.secure_redirects
- net.ipv4.conf.default.secure_redirects

I've added the following to /etc/sysctl.conf and have rebooted the system:

# Disable response to broadcasts.
# You don't want yourself becoming a Smurf amplifier.
net.ipv4.icmp_echo_ignore_broadcasts = 1
# enable route verification on all interfaces
net.ipv4.conf.all.rp_filter = 1
# enable ipV6 forwarding
#net.ipv6.conf.all.forwarding = 1
# increase the number of possible inotify(7) watches
fs.inotify.max_user_watches = 65536
# avoid deleting secondary IPs on deleting the primary IP
net.ipv4.conf.default.promote_secondaries = 1
net.ipv4.conf.all.promote_secondaries = 1
# disable ICMP redirects
net.ipv4.send_redirects = 0
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.all.secure_redirects = 0
net.ipv4.conf.default.secure_redirects = 0
net.ipv4.tcp_timestamps = 0

But when I run /sbin/sysctl -a, I still see the following:

net.ipv4.conf.default.secure_redirects = 1
net.ipv4.conf.all.secure_redirects = 1

I then run /sbin/sysctl -p, and get the following output:

net.ipv4.icmp_echo_ignore_broadcasts = 1
net.ipv4.conf.all.rp_filter = 1
fs.inotify.max_user_watches = 65536
net.ipv4.conf.default.promote_secondaries = 1
net.ipv4.conf.all.promote_secondaries = 1
/proc/sys/net/ipv4/send_redirects: No such file or directory
net.ipv4.conf.all.accept_redirects = 0
net.ipv4.conf.default.accept_redirects = 0
net.ipv4.conf.all.secure_redirects = 0
net.ipv4.conf.default.secure_redirects = 0
net.ipv4.tcp_timestamps = 0

I then run /sbin/sysctl -a and see the following:

net.ipv4.conf.default.secure_redirects = 0
net.ipv4.conf.all.secure_redirects = 0

However, after I reboot and run /sbin/sysctl -a, I still see the following:

net.ipv4.conf.default.secure_redirects = 1
net.ipv4.conf.all.secure_redirects = 1

How can I get those two attributes to permanently be set to 0?