diff --git a/usr/local/share/bastille/start.sh b/usr/local/share/bastille/start.sh
index 8116b318..c3fead95 100644
--- a/usr/local/share/bastille/start.sh
+++ b/usr/local/share/bastille/start.sh
@@ -89,8 +89,10 @@ for _jail in ${JAILS}; do
         fi
 
         ## add ip4.addr to firewall table:jails
-        if grep "interface = ${bastille_network_loopback}" "${bastille_jailsdir}/${_jail}/jail.conf"; then
-            pfctl -q -t jails -T add "$(jls -j "${_jail}" ip4.addr)"
+        if [ -n "${bastille_network_loopback}" ]; then
+            if grep -qw "interface.*=.*${bastille_network_loopback}" "${bastille_jailsdir}/${_jail}/jail.conf"; then
+                pfctl -q -t jails -T add "$(jls -j ${_jail} ip4.addr)"
+            fi
         fi
     fi
     echo
diff --git a/usr/local/share/bastille/stop.sh b/usr/local/share/bastille/stop.sh
index 15d79a0b..2c42104f 100644
--- a/usr/local/share/bastille/stop.sh
+++ b/usr/local/share/bastille/stop.sh
@@ -67,8 +67,10 @@ for _jail in ${JAILS}; do
     ## test if running
     if [ "$(jls name | awk "/^${_jail}$/")" ]; then
         ## remove ip4.addr from firewall table:jails
-        if grep "interface = ${bastille_network_loopback}" "${bastille_jailsdir}/${_jail}/jail.conf"; then
-            pfctl -q -t jails -T delete "$(jls -j "${_jail}" ip4.addr)"
+        if [ -n "${bastille_network_loopback}" ]; then
+            if grep -qw "interface.*=.*${bastille_network_loopback}" "${bastille_jailsdir}/${_jail}/jail.conf"; then
+                pfctl -q -t jails -T delete "$(jls -j ${_jail} ip4.addr)"
+            fi
         fi
 
         ## remove rctl limits