diff -Naur sshguard/sshguard.install sshguard.patched/sshguard.install
--- sshguard/sshguard.install	2013-02-24 23:17:47.541687003 +0100
+++ sshguard.patched/sshguard.install	2013-02-24 23:21:27.543828483 +0100
@@ -1,8 +1,10 @@
 post_install() {
   mkdir -p /var/db/sshguard
-  echo "-- You should add chain to your firewall:"
+  echo "-- You should add chains to your firewall for IPv4 and IPv6:"
   echo "--   iptables -N sshguard"
   echo "--   iptables -A INPUT -p tcp --dport 22 -j sshguard"
+  echo "--   ip6tables -N sshguard"
+  echo "--   ip6tables -A INPUT -p tcp --dport 22 -j sshguard"
   echo "-- For more information, see http://www.sshguard.net/doc/"
   /bin/true
 }
diff -Naur sshguard/sshguard.service sshguard.patched/sshguard.service
--- sshguard/sshguard.service	2013-02-24 23:17:47.541687003 +0100
+++ sshguard.patched/sshguard.service	2013-02-24 22:40:57.893657694 +0100
@@ -1,7 +1,7 @@
 [Unit]
 Description=Block hacking attempts
-After=iptables.service network.target
-Wants=iptables.service
+After=iptables.service ip6tables.service network.target
+Wants=iptables.service ip6tables.service
 
 [Service]
 ExecStart=/usr/lib/systemd/scripts/sshguard-journalctl -b /var/db/sshguard/blacklist.db