diff --git a/templates/rules.v6.erb b/templates/rules.v6.erb
index 8bbc6fe..a3e6a5b 100644
--- a/templates/rules.v6.erb
+++ b/templates/rules.v6.erb
@@ -10,7 +10,7 @@
 # SSH from anywhere
 -A openstack-INPUT -m state --state NEW -m tcp -p tcp --dport 22 -j ACCEPT
 # SNMP from openstack cacti
--A openstack-INPUT -m udp -p udp --dport 161 -s 2001:4800:780d:0509:3bc3:d7f6:ff04:49de -j ACCEPT
+-A openstack-INPUT -m udp -p udp --dport 161 -s 2001:4800:7819:104:be76:4eff:fe05:1d6a -j ACCEPT
 # Public TCP ports
 <% @public_tcp_ports.each do |port| -%>
 -A openstack-INPUT -m state --state NEW -m tcp -p tcp --dport <%= port %> -j ACCEPT