root@kyriasis:/home/kyrias# ip6tables-save
# Generated by ip6tables-save v1.4.8 on Tue Mar  5 08:16:10 2013
*nat
:PREROUTING ACCEPT [1:104]
:INPUT ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
:POSTROUTING ACCEPT [0:0]
COMMIT
# Completed on Tue Mar  5 08:16:10 2013
# Generated by ip6tables-save v1.4.8 on Tue Mar  5 08:16:10 2013
*security
:INPUT ACCEPT [0:0]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [0:0]
COMMIT
# Completed on Tue Mar  5 08:16:10 2013
# Generated by ip6tables-save v1.4.8 on Tue Mar  5 08:16:10 2013
*raw
:PREROUTING ACCEPT [260:19024]
:OUTPUT ACCEPT [9:744]
COMMIT
# Completed on Tue Mar  5 08:16:10 2013
# Generated by ip6tables-save v1.4.8 on Tue Mar  5 08:16:10 2013
*mangle
:PREROUTING ACCEPT [260:19024]
:INPUT ACCEPT [250:18320]
:FORWARD ACCEPT [0:0]
:OUTPUT ACCEPT [9:744]
:POSTROUTING ACCEPT [0:0]
COMMIT
# Completed on Tue Mar  5 08:16:10 2013
# Generated by ip6tables-save v1.4.8 on Tue Mar  5 08:16:10 2013
*filter
:INPUT DROP [250:18320]
:FORWARD DROP [0:0]
:OUTPUT DROP [9:744]
-A INPUT -i lo -j ACCEPT
-A OUTPUT -o lo -j ACCEPT
COMMIT
# Completed on Tue Mar  5 08:16:10 2013
root@kyriasis:/home/kyrias# sysctl -a | grep forwarding
net.ipv4.conf.all.forwarding = 0
net.ipv4.conf.all.mc_forwarding = 0
net.ipv4.conf.default.forwarding = 0
net.ipv4.conf.default.mc_forwarding = 0
net.ipv4.conf.dummy0.forwarding = 0
net.ipv4.conf.dummy0.mc_forwarding = 0
net.ipv4.conf.eth0.forwarding = 0
net.ipv4.conf.eth0.mc_forwarding = 0
net.ipv4.conf.gre0.forwarding = 0
net.ipv4.conf.gre0.mc_forwarding = 0
net.ipv4.conf.ip6gre0.forwarding = 0
net.ipv4.conf.ip6gre0.mc_forwarding = 0
net.ipv4.conf.ip6tnl0.forwarding = 0
net.ipv4.conf.ip6tnl0.mc_forwarding = 0
net.ipv4.conf.lo.forwarding = 0
net.ipv4.conf.lo.mc_forwarding = 0
net.ipv4.conf.sit0.forwarding = 0
net.ipv4.conf.sit0.mc_forwarding = 0
net.ipv4.conf.teql0.forwarding = 0
net.ipv4.conf.teql0.mc_forwarding = 0
net.ipv4.conf.tunl0.forwarding = 0
net.ipv4.conf.tunl0.mc_forwarding = 0
error: permission denied on key 'net.ipv4.route.flush'
net.ipv6.conf.all.forwarding = 0
net.ipv6.conf.default.forwarding = 0
net.ipv6.conf.dummy0.forwarding = 0
net.ipv6.conf.eth0.forwarding = 0
net.ipv6.conf.gre0.forwarding = 0
net.ipv6.conf.ip6gre0.forwarding = 0
net.ipv6.conf.ip6tnl0.forwarding = 0
net.ipv6.conf.lo.forwarding = 0
net.ipv6.conf.sit0.forwarding = 0
net.ipv6.conf.teql0.forwarding = 0
net.ipv6.conf.tunl0.forwarding = 0
error: permission denied on key 'net.ipv6.route.flush'