diff --git a/bind_change_SOA.sh b/bind_change_SOA.sh
index e5a4862..60e1bad 100755
--- a/bind_change_SOA.sh
+++ b/bind_change_SOA.sh
@@ -186,6 +186,7 @@ done
 #---------------------------------------
 
 DEFAULT_CONF_FILE_DIR="/etc/bind"
+DEFAULT_BIND_CACHE_DIR="/var/cache/bind"
 
 
 
@@ -219,6 +220,9 @@ if $LOGGING ; then
 
 
    [[ -n "$CONF_FILE_DIR" ]] && DEFAULT_CONF_FILE_DIR="$CONF_FILE_DIR"
+
+   [[ -n "$BIND_CACHE_DIR" ]] && DEFAULT_BIND_CACHE_DIR="$BIND_CACHE_DIR"
+
    if [[ -n "$ZONE_FILE_MASTER_DIR" ]] ; then
       DEFAULT_ZONE_FILE_MASTER_DIR="$ZONE_FILE_MASTER_DIR"
    else
@@ -227,7 +231,7 @@ if $LOGGING ; then
    if [[ -n "$ZONE_FILE_SLAVE_DIR" ]] ; then
       DEFAULT_ZONE_FILE_SLAVE_DIR="$ZONE_FILE_SLAVE_DIR"
    else
-      DEFAULT_ZONE_FILE_SLAVE_DIR="${DEFAULT_CONF_FILE_DIR}/slave"
+      DEFAULT_ZONE_FILE_SLAVE_DIR="$DEFAULT_BIND_CACHE_DIR"
    fi
    [[ -n "$ZONES_DECLARATION_FILE" ]] && DEFAULT_ZONES_DECLARATION_FILE="$ZONES_DECLARATION_FILE"
 
diff --git a/bind_change_ip.sh b/bind_change_ip.sh
index 1bd43a3..029132d 100755
--- a/bind_change_ip.sh
+++ b/bind_change_ip.sh
@@ -133,6 +133,7 @@ trap clean_up SIGHUP SIGINT SIGTERM
 #---------------------------------------
 
 DEFAULT_CONF_FILE_DIR="/etc/bind"
+DEFAULT_BIND_CACHE_DIR="/var/cache/bind"
 
 
 
@@ -163,6 +164,9 @@ fi
 
 [[ -n "$CONF_FILE_DIR" ]] && DEFAULT_CONF_FILE_DIR="$CONF_FILE_DIR"
 
+[[ -n "$BIND_CACHE_DIR" ]] && DEFAULT_BIND_CACHE_DIR="$BIND_CACHE_DIR"
+
+
 if [[ -n "$ZONE_FILE_MASTER_DIR" ]] ; then
    DEFAULT_ZONE_FILE_MASTER_DIR="$ZONE_FILE_MASTER_DIR"
 else
@@ -172,7 +176,7 @@ fi
 if [[ -n "$ZONE_FILE_SLAVE_DIR" ]] ; then
    DEFAULT_ZONE_FILE_SLAVE_DIR="$ZONE_FILE_SLAVE_DIR"
 else
-   DEFAULT_ZONE_FILE_SLAVE_DIR="${DEFAULT_CONF_FILE_DIR}/slave"
+   DEFAULT_ZONE_FILE_SLAVE_DIR="${DEFAULT_BIND_CACHE_DIR}"
 fi
 
 if [[ -n "$ZONES_DECLARATION_FILE" ]] ; then
diff --git a/bind_disable_ipv6.sh b/bind_disable_ipv6.sh
index 4f2309d..4132cfb 100755
--- a/bind_disable_ipv6.sh
+++ b/bind_disable_ipv6.sh
@@ -99,6 +99,7 @@ trap clean_up SIGHUP SIGINT SIGTERM
 #---------------------------------------
 
 DEFAULT_CONF_FILE_DIR="/etc/bind"
+DEFAULT_BIND_CACHE_DIR="/var/cache/bind"
 
 
 
@@ -129,6 +130,8 @@ fi
 
 [[ -n "$CONF_FILE_DIR" ]] && DEFAULT_CONF_FILE_DIR="$CONF_FILE_DIR"
 
+[[ -n "$BIND_CACHE_DIR" ]] && DEFAULT_BIND_CACHE_DIR="$BIND_CACHE_DIR"
+
 if [[ -n "$ZONE_FILE_MASTER_DIR" ]] ; then
    DEFAULT_ZONE_FILE_MASTER_DIR="$ZONE_FILE_MASTER_DIR"
 else
@@ -138,7 +141,7 @@ fi
 if [[ -n "$ZONE_FILE_SLAVE_DIR" ]] ; then
    DEFAULT_ZONE_FILE_SLAVE_DIR="$ZONE_FILE_SLAVE_DIR"
 else
-   DEFAULT_ZONE_FILE_SLAVE_DIR="${DEFAULT_CONF_FILE_DIR}/slave"
+   DEFAULT_ZONE_FILE_SLAVE_DIR="$DEFAULT_BIND_CACHE_DIR"
 fi
 
 if [[ -n "$ZONES_DECLARATION_FILE" ]] ; then
diff --git a/bind_enable_ipv6.sh b/bind_enable_ipv6.sh
index 07556cc..083637c 100755
--- a/bind_enable_ipv6.sh
+++ b/bind_enable_ipv6.sh
@@ -99,6 +99,7 @@ trap clean_up SIGHUP SIGINT SIGTERM
 #---------------------------------------
 
 DEFAULT_CONF_FILE_DIR="/etc/bind"
+DEFAULT_BIND_CACHE_DIR="/var/cache/bind"
 
 
 
@@ -129,6 +130,8 @@ fi
 
 [[ -n "$CONF_FILE_DIR" ]] && DEFAULT_CONF_FILE_DIR="$CONF_FILE_DIR"
 
+[[ -n "$BIND_CACHE_DIR" ]] && DEFAULT_BIND_CACHE_DIR="$BIND_CACHE_DIR"
+
 if [[ -n "$ZONE_FILE_MASTER_DIR" ]] ; then
    DEFAULT_ZONE_FILE_MASTER_DIR="$ZONE_FILE_MASTER_DIR"
 else
@@ -138,7 +141,7 @@ fi
 if [[ -n "$ZONE_FILE_SLAVE_DIR" ]] ; then
    DEFAULT_ZONE_FILE_SLAVE_DIR="$ZONE_FILE_SLAVE_DIR"
 else
-   DEFAULT_ZONE_FILE_SLAVE_DIR="${DEFAULT_CONF_FILE_DIR}/slave"
+   DEFAULT_ZONE_FILE_SLAVE_DIR="$DEFAULT_BIND_CACHE_DIR"
 fi
 
 if [[ -n "$ZONES_DECLARATION_FILE" ]] ; then
diff --git a/bind_remove_domain_on_master.sh b/bind_remove_domain_on_master.sh
index c8a19a2..87ba7d8 100755
--- a/bind_remove_domain_on_master.sh
+++ b/bind_remove_domain_on_master.sh
@@ -213,6 +213,7 @@ fi
 #---------------------------------------
 
 DEFAULT_CONF_FILE_DIR="/etc/bind"
+DEFAULT_BIND_CACHE_DIR="/var/cache/bind"
 
 
 #---------------------------------------
@@ -242,6 +243,9 @@ if $LOGGING ; then
    fi
 
    [[ -n "$CONF_FILE_DIR" ]] && DEFAULT_CONF_FILE_DIR="$CONF_FILE_DIR"
+
+   [[ -n "$BIND_CACHE_DIR" ]] && DEFAULT_BIND_CACHE_DIR="$BIND_CACHE_DIR"
+
    if [[ -n "$ZONE_FILE_MASTER_DIR" ]] ; then
       DEFAULT_ZONE_FILE_MASTER_DIR="$ZONE_FILE_MASTER_DIR"
    else
@@ -250,7 +254,7 @@ if $LOGGING ; then
    if [[ -n "$ZONE_FILE_SLAVE_DIR" ]] ; then
       DEFAULT_ZONE_FILE_SLAVE_DIR="$ZONE_FILE_SLAVE_DIR"
    else
-      DEFAULT_ZONE_FILE_SLAVE_DIR="${DEFAULT_CONF_FILE_DIR}/slave"
+      DEFAULT_ZONE_FILE_SLAVE_DIR="$DEFAULT_BIND_CACHE_DIR"
    fi
    [[ -n "$ZONES_DECLARATION_FILE" ]] && DEFAULT_ZONES_DECLARATION_FILE="$ZONES_DECLARATION_FILE"
 
diff --git a/bind_remove_domain_on_slave.sh b/bind_remove_domain_on_slave.sh
index 03852ad..846f1f0 100755
--- a/bind_remove_domain_on_slave.sh
+++ b/bind_remove_domain_on_slave.sh
@@ -213,6 +213,7 @@ fi
 #---------------------------------------
 
 DEFAULT_CONF_FILE_DIR="/etc/bind"
+DEFAULT_BIND_CACHE_DIR="/var/cache/bind"
 
 
 #---------------------------------------
@@ -242,6 +243,9 @@ if $LOGGING ; then
    fi
 
    [[ -n "$CONF_FILE_DIR" ]] && DEFAULT_CONF_FILE_DIR="$CONF_FILE_DIR"
+
+   [[ -n "$BIND_CACHE_DIR" ]] && DEFAULT_BIND_CACHE_DIR="$BIND_CACHE_DIR"
+
    if [[ -n "$ZONE_FILE_MASTER_DIR" ]] ; then
       DEFAULT_ZONE_FILE_MASTER_DIR="$ZONE_FILE_MASTER_DIR"
    else
@@ -250,7 +254,7 @@ if $LOGGING ; then
    if [[ -n "$ZONE_FILE_SLAVE_DIR" ]] ; then
       DEFAULT_ZONE_FILE_SLAVE_DIR="$ZONE_FILE_SLAVE_DIR"
    else
-      DEFAULT_ZONE_FILE_SLAVE_DIR="${DEFAULT_CONF_FILE_DIR}/slave"
+      DEFAULT_ZONE_FILE_SLAVE_DIR="$DEFAULT_BIND_CACHE_DIR"
    fi
    [[ -n "$ZONES_DECLARATION_FILE" ]] && DEFAULT_ZONES_DECLARATION_FILE="$ZONES_DECLARATION_FILE"
 
@@ -304,7 +308,6 @@ if $LOGGING ; then
 
    [[ -n "$DEFAULT_ZONES_DECLARATION_FILE" ]] || DEFAULT_ZONES_DECLARATION_FILE="${CONF_FILE_DIR}/named.conf.local"
    [[ -n "$ZONE_FILE_MASTER_DIR" ]] || ZONE_FILE_MASTER_DIR="${CONF_FILE_DIR}/master"
-   [[ -n "$ZONE_FILE_SLAVE_DIR" ]] || ZONE_FILE_SLAVE_DIR="${CONF_FILE_DIR}/slave"
 
 
    echo ""
@@ -399,7 +402,7 @@ else # if $LOGGING
 
    [[ -n "$ZONES_DECLARATION_FILE" ]] || ZONES_DECLARATION_FILE="${CONF_FILE_DIR}/named.conf.local"
    [[ -n "$ZONE_FILE_MASTER_DIR" ]] || ZONE_FILE_MASTER_DIR="${CONF_FILE_DIR}/master"
-   [[ -n "$ZONE_FILE_SLAVE_DIR" ]] || ZONE_FILE_SLAVE_DIR="${CONF_FILE_DIR}/slave"
+   [[ -n "$ZONE_FILE_SLAVE_DIR" ]] || ZONE_FILE_SLAVE_DIR="$DEFAULT_ZONE_FILE_SLAVE_DIR"
 
 fi
 
diff --git a/bind_set_ttl_to_default.sh b/bind_set_ttl_to_default.sh
index 6e2eb56..a982a95 100755
--- a/bind_set_ttl_to_default.sh
+++ b/bind_set_ttl_to_default.sh
@@ -133,6 +133,7 @@ trap clean_up SIGHUP SIGINT SIGTERM
 #---------------------------------------
 
 DEFAULT_CONF_FILE_DIR="/etc/bind"
+DEFAULT_BIND_CACHE_DIR="/var/cache/bind"
 
 
 
@@ -163,6 +164,8 @@ fi
 
 [[ -n "$CONF_FILE_DIR" ]] && DEFAULT_CONF_FILE_DIR="$CONF_FILE_DIR"
 
+[[ -n "$BIND_CACHE_DIR" ]] && DEFAULT_BIND_CACHE_DIR="$BIND_CACHE_DIR"
+
 if [[ -n "$ZONE_FILE_MASTER_DIR" ]] ; then
    DEFAULT_ZONE_FILE_MASTER_DIR="$ZONE_FILE_MASTER_DIR"
 else
@@ -172,7 +175,7 @@ fi
 if [[ -n "$ZONE_FILE_SLAVE_DIR" ]] ; then
    DEFAULT_ZONE_FILE_SLAVE_DIR="$ZONE_FILE_SLAVE_DIR"
 else
-   DEFAULT_ZONE_FILE_SLAVE_DIR="${DEFAULT_CONF_FILE_DIR}/slave"
+   DEFAULT_ZONE_FILE_SLAVE_DIR="$DEFAULT_BIND_CACHE_DIR"
 fi
 
 if [[ -n "$ZONE_FILE_SUFFIX" ]] ; then