diff --git a/minifirewall.d/default-input-v6 b/minifirewall.d/default-input-v6
index 38cfe3f..6ec4fd4 100644
--- a/minifirewall.d/default-input-v6
+++ b/minifirewall.d/default-input-v6
@@ -1,7 +1,9 @@
 # shellcheck shell=sh disable=SC2034
 # allow input HTTP/HTTPS/SMTP/DNS traffic
-/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 80 --match state --state ESTABLISHED,RELATED -j ACCEPT
-/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 443 --match state --state ESTABLISHED,RELATED -j ACCEPT
-/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 25 --match state --state ESTABLISHED,RELATED -j ACCEPT
-/sbin/ip6tables -A INPUT -i $INT -p udp --sport 53 --match state --state ESTABLISHED,RELATED -j ACCEPT
-/sbin/ip6tables -A INPUT -i $INT -p tcp --sport 53 --match state --state ESTABLISHED,RELATED -j ACCEPT
+if [ "${IPV6}" != "off" ]; then
+    /sbin/ip6tables -A INPUT -i ${INT} -p tcp --sport 80 --match state --state ESTABLISHED,RELATED -j ACCEPT
+    /sbin/ip6tables -A INPUT -i ${INT} -p tcp --sport 443 --match state --state ESTABLISHED,RELATED -j ACCEPT
+    /sbin/ip6tables -A INPUT -i ${INT} -p tcp --sport 25 --match state --state ESTABLISHED,RELATED -j ACCEPT
+    /sbin/ip6tables -A INPUT -i ${INT} -p udp --sport 53 --match state --state ESTABLISHED,RELATED -j ACCEPT
+    /sbin/ip6tables -A INPUT -i ${INT} -p tcp --sport 53 --match state --state ESTABLISHED,RELATED -j ACCEPT
+fi
\ No newline at end of file
diff --git a/minifirewall.d/dhcp-v6.example b/minifirewall.d/dhcp-v6.example
index f2a60df..84e0438 100644
--- a/minifirewall.d/dhcp-v6.example
+++ b/minifirewall.d/dhcp-v6.example
@@ -1,4 +1,6 @@
 # shellcheck shell=sh disable=SC2034
 # allow DHCPv6
-/sbin/ip6tables -A INPUT -i $INT -p udp --dport 546 -d fe80::/64 -j ACCEPT
-/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 547 -j ACCEPT
\ No newline at end of file
+if [ "${IPV6}" != "off" ]; then
+    /sbin/ip6tables -A INPUT -i ${INT}  -p udp --dport 546 -d fe80::/64 -j ACCEPT
+    /sbin/ip6tables -A OUTPUT -o ${INT}  -p udp --dport 547 -j ACCEPT
+fi
\ No newline at end of file
diff --git a/minifirewall.d/dns-output-v6 b/minifirewall.d/dns-output-v6
index ac966ff..6711eb5 100644
--- a/minifirewall.d/dns-output-v6
+++ b/minifirewall.d/dns-output-v6
@@ -1,3 +1,5 @@
 # shellcheck shell=sh disable=SC2034
 # allow DNS output
-/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 53 --match state --state NEW -j ACCEPT
\ No newline at end of file
+if [ "${IPV6}" != "off" ]; then
+    /sbin/ip6tables -A OUTPUT -o ${INT}  -p udp --dport 53 --match state --state NEW -j ACCEPT
+fi
\ No newline at end of file
diff --git a/minifirewall.d/ntp-output-v6 b/minifirewall.d/ntp-output-v6
index e1a27e1..dc7b1c4 100644
--- a/minifirewall.d/ntp-output-v6
+++ b/minifirewall.d/ntp-output-v6
@@ -1,3 +1,5 @@
 # shellcheck shell=sh disable=SC2034
 # allow NTP output
-/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 123 --match state --state NEW -j ACCEPT
\ No newline at end of file
+if [ "${IPV6}" != "off" ]; then
+    /sbin/ip6tables -A OUTPUT -o ${INT}  -p udp --dport 123 --match state --state NEW -j ACCEPT
+fi
\ No newline at end of file
diff --git a/minifirewall.d/traceroute-output-v6.example b/minifirewall.d/traceroute-output-v6.example
index 786f352..73696ae 100644
--- a/minifirewall.d/traceroute-output-v6.example
+++ b/minifirewall.d/traceroute-output-v6.example
@@ -1,3 +1,5 @@
 # shellcheck shell=sh disable=SC2034
 # allow traceroute output
-#/sbin/ip6tables -A OUTPUT -o $INT -p udp --dport 33434:33523 --match state --state NEW -j ACCEPT
\ No newline at end of file
+if [ "${IPV6}" != "off" ]; then
+    /sbin/ip6tables -A OUTPUT -o ${INT} -p udp --dport 33434:33523 --match state --state NEW -j ACCEPT
+fi
\ No newline at end of file