diff --git a/CHANGELOG b/CHANGELOG
index f6e3202..c3e44ea 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -3,6 +3,7 @@
 ======================
 Version    Description
 
+1.2.21......Check/update bastille config parameters on runtime.
 1.2.20......Allow install in zroot platform with optional zfs dataset.
 1.2.19......Fix typo in tarballs page and cleanup, thanks to Lux.
 1.2.18......Fix typo in tarballs download page, thanks to Lux.
diff --git a/bastille-init b/bastille-init
old mode 100755
new mode 100644
index de7d007..d0ec4ec
--- a/bastille-init
+++ b/bastille-init
@@ -122,7 +122,7 @@ if [ "${bastille_zfs_enable}" = "YES" ] || [ "${bastille_zfs_enable}" = "yes" ];
 			if echo "${BASTILLE_ZFS_ZPOOL_MOUNTPOINT}" | grep -q "/${ZROOT}"; then
 				BASTILLE_ZFS_ZPOOL_MOUNTPOINT_TRIM="/${ZROOT}"
 				CWDIR_TRIM=$(echo "${CWDIR}" | sed "s|/mnt/||;s|/${DAFAULT_BASTILLE_PREFIX}||")
-				if zfs get -H -o value mountpoint "${ZROOT}/${CWDIR_TRIM}"; then
+				if zfs get -H -o value mountpoint "${ZROOT}/${CWDIR_TRIM}" >/dev/null 2>&1; then
 					CWDIR_TRIM="/${ZROOT}"
 				fi
 			fi
@@ -1417,7 +1417,10 @@ update_config()
 {
 	# Update config based on minimum version.
 
-	# Network parameters.
+	# Update network parameters.
+	if grep -qw 'bastille_jail_loopback=' ${INSTALLPATH}/${BASTILLECONF}; then
+		sed -i '' 's/bastille_jail_loopback=/bastille_network_loopback=/' ${INSTALLPATH}/${BASTILLECONF}
+	fi
 	if grep -qw 'bastille_jail_loopback=' ${INSTALLPATH}/${BASTILLECONF}; then
 		sed -i '' 's/bastille_jail_loopback=/bastille_network_loopback=/' ${INSTALLPATH}/${BASTILLECONF}
 	fi
@@ -1427,6 +1430,8 @@ update_config()
 	if grep -qw 'bastille_jail_gateway=' ${INSTALLPATH}/${BASTILLECONF}; then
 		sed -i '' 's/bastille_jail_gateway=/bastille_network_gateway=/' ${INSTALLPATH}/${BASTILLECONF}
 	fi
+
+	# Fetch parameters.
 	if ! grep -qw 'bastille_url_freebsd=' ${INSTALLPATH}/${BASTILLECONF}; then
 		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_url_freebsd="${URL_FREEBSD}"
 	fi
@@ -1437,17 +1442,30 @@ update_config()
 		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_url_midnightbsd="${URL_MIDNIGHTBSD}"
 	fi
 
+	# Check/append network parameters.
+	if ! grep -qw 'bastille_network_vnet_type=' ${INSTALLPATH}/${BASTILLECONF}; then
+		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_network_vnet_type="if_bridge"
+	fi
+	if ! grep -qw 'bastille_network_loopback=' ${INSTALLPATH}/${BASTILLECONF}; then
+		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_network_loopback=""
+	fi
 	if ! grep -qw 'bastille_network_pf_ext_if=' ${INSTALLPATH}/${BASTILLECONF}; then
 		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_network_pf_ext_if="ext_if"
 	fi
 	if ! grep -qw 'bastille_network_pf_table=' ${INSTALLPATH}/${BASTILLECONF}; then
 		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_network_pf_table="jails"
 	fi
+	if ! grep -qw 'bastille_network_shared=' ${INSTALLPATH}/${BASTILLECONF}; then
+		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_network_shared=""
+	fi
+	if ! grep -qw 'bastille_network_gateway=' ${INSTALLPATH}/${BASTILLECONF}; then
+		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_network_gateway=""
+	fi
 	if ! grep -qw 'bastille_network_gateway6=' ${INSTALLPATH}/${BASTILLECONF}; then
 		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_network_gateway6=""
 	fi
 
-	# Template parameters.
+	# Check/append template parameters.
 	if ! grep -qw 'bastille_template_base=' ${INSTALLPATH}/${BASTILLECONF}; then
 		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_template_base="default/base"
 	fi
@@ -1457,12 +1475,18 @@ update_config()
 	if ! grep -qw 'bastille_template_thick=' ${INSTALLPATH}/${BASTILLECONF}; then
 		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_template_thick="default/thick"
 	fi
+	if ! grep -qw 'bastille_template_clone=' ${INSTALLPATH}/${BASTILLECONF}; then
+		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_template_clone="default/clone"
+	fi
 	if ! grep -qw 'bastille_template_thin=' ${INSTALLPATH}/${BASTILLECONF}; then
 		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_template_thin="default/thin"
 	fi
 	if ! grep -qw 'bastille_template_vnet=' ${INSTALLPATH}/${BASTILLECONF}; then
 		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_template_vnet="default/vnet"
 	fi
+	if ! grep -qw 'bastille_template_vlan=' ${INSTALLPATH}/${BASTILLECONF}; then
+		sysrc -f ${INSTALLPATH}/${BASTILLECONF} bastille_template_vlan="default/vlan"
+	fi
 
 	# Remove deprecated parameters based on minimum version.
 	if grep -qw 'bastille_jail_interface' ${INSTALLPATH}/${BASTILLECONF}; then
diff --git a/version b/version
index 53fc08d..9728bd6 100644
--- a/version
+++ b/version
@@ -1 +1 @@
-1.2.20
+1.2.21