diff --git a/net/mwan3/files/etc/hotplug.d/iface/15-mwan3 b/net/mwan3/files/etc/hotplug.d/iface/15-mwan3
index 803d3ea27..586dfc1f6 100644
--- a/net/mwan3/files/etc/hotplug.d/iface/15-mwan3
+++ b/net/mwan3/files/etc/hotplug.d/iface/15-mwan3
@@ -33,8 +33,8 @@ $IPT4 -S mwan3_hook &>/dev/null || {
 
 mwan3_init
 [ "$MWAN3_STARTUP" = 1 ] || {
-	mwan3_set_connected_iptables
-	mwan3_set_custom_ipset
+	config_get family $INTERFACE family ipv4
+	mwan3_set_connected_${family}
 }
 
 if [ "$MWAN3_STARTUP" != 1 ]; then
@@ -68,8 +68,7 @@ case "$ACTION" in
 	ifup|connected)
 		mwan3_create_iface_iptables $INTERFACE $DEVICE
 		mwan3_create_iface_rules $INTERFACE $DEVICE
-		mwan3_create_iface_route $INTERFACE $DEVICE
-		[ "$MWAN3_STARTUP" != 1 ] && mwan3_add_non_default_iface_route $INTERFACE $DEVICE
+		[ "$MWAN3_STARTUP" != 1 ] && mwan3_create_iface_route $INTERFACE $DEVICE
 		mwan3_set_iface_hotplug_state $INTERFACE "$binary_status"
 
 		mwan3_get_src_ip src_ip "$TRUE_INTERFACE"
diff --git a/net/mwan3/files/lib/mwan3/mwan3.sh b/net/mwan3/files/lib/mwan3/mwan3.sh
index 4d42f8954..7f5200d15 100644
--- a/net/mwan3/files/lib/mwan3/mwan3.sh
+++ b/net/mwan3/files/lib/mwan3/mwan3.sh
@@ -294,40 +294,48 @@ mwan3_set_connected_ipv4()
 
 	$IPS swap mwan3_connected_v4_temp mwan3_connected_v4
 	$IPS destroy mwan3_connected_v4_temp
+	$IPS -! add mwan3_connected mwan3_connected_v4
 
 }
 
-mwan3_set_connected_iptables()
+mwan3_set_connected_ipv6()
 {
 	local connected_network_v6 source_network_v6 error
 	local update=""
-	mwan3_set_connected_ipv4
+	[ $NO_IPV6 -eq 0 ] || return
 
-	[ $NO_IPV6 -eq 0 ] && {
-		mwan3_push_update -! create mwan3_connected_v6 hash:net family inet6
-		mwan3_push_update flush mwan3_connected_v6
+	mwan3_push_update -! create mwan3_connected_v6 hash:net family inet6
+	mwan3_push_update flush mwan3_connected_v6
 
-		for connected_network_v6 in $($IP6 route | awk '{print $1}' | grep -E "$IPv6_REGEX"); do
-			mwan3_push_update -! add mwan3_connected_v6 "$connected_network_v6"
-		done
+	for connected_network_v6 in $($IP6 route | awk '{print $1}' | grep -E "$IPv6_REGEX"); do
+		mwan3_push_update -! add mwan3_connected_v6 "$connected_network_v6"
+	done
 
-		mwan3_push_update -! create mwan3_source_v6 hash:net family inet6
-		for source_network_v6 in $($IP6 addr ls | sed -ne 's/ *inet6 \([^ \/]*\).* scope global.*/\1/p'); do
-			mwan3_push_update -! add mwan3_source_v6 "$source_network_v6"
-		done
-	}
+	mwan3_push_update -! create mwan3_source_v6 hash:net family inet6
+	for source_network_v6 in $($IP6 addr ls | sed -ne 's/ *inet6 \([^ \/]*\).* scope global.*/\1/p'); do
+		mwan3_push_update -! add mwan3_source_v6 "$source_network_v6"
+	done
+	mwan3_push_update -! add mwan3_connected mwan3_connected_v6
+	error=$(echo "$update" | $IPS restore 2>&1) || LOG error "set_connected_ipv6: $error"
+}
+
+mwan3_set_connected_ipset()
+{
+	local error
+	local update=""
 
 	mwan3_push_update -! create mwan3_connected list:set
 	mwan3_push_update flush mwan3_connected
-	mwan3_push_update -! add mwan3_connected mwan3_connected_v4
-	[ $NO_IPV6 -eq 0 ] && mwan3_push_update -! add mwan3_connected mwan3_connected_v6
 
 	mwan3_push_update -! create mwan3_dynamic_v4 hash:net
 	mwan3_push_update -! add mwan3_connected mwan3_dynamic_v4
 
-	[ $NO_IPV6 -eq 0 ] && mwan3_push_update -! create mwan3_dynamic_v6 hash:net family inet6
-	[ $NO_IPV6 -eq 0 ] && mwan3_push_update -! add mwan3_connected mwan3_dynamic_v6
-	error=$(echo "$update" | $IPS restore 2>&1) || LOG error "set_connected_iptables: $error"
+	if [ $NO_IPV6 -eq 0 ]; then
+		mwan3_push_update -! create mwan3_dynamic_v6 hash:net family inet6
+		mwan3_push_update -! add mwan3_connected mwan3_dynamic_v6
+	fi
+
+	error=$(echo "$update" | $IPS restore 2>&1) || LOG error "set_connected_ipset: $error"
 }
 
 mwan3_set_general_rules()
@@ -439,7 +447,7 @@ mwan3_set_general_iptables()
 
 mwan3_create_iface_iptables()
 {
-	local id family connected_name IPT IPTR current update error
+	local id family IPT IPTR current update error
 
 	config_get family "$1" family ipv4
 	mwan3_get_iface_id id "$1"
@@ -447,16 +455,11 @@ mwan3_create_iface_iptables()
 	[ -n "$id" ] || return 0
 
 	if [ "$family" = "ipv4" ]; then
-		connected_name=mwan3_connected
 		IPT="$IPT4"
 		IPTR="$IPT4R"
-		$IPS -! create $connected_name list:set
-
 	elif [ "$family" = "ipv6" ] && [ $NO_IPV6 -eq 0 ]; then
-		connected_name=mwan3_connected_v6
 		IPT="$IPT6"
 		IPTR="$IPT6R"
-		$IPS -! create $connected_name hash:net family inet6
 	else
 		return
 	fi
@@ -474,7 +477,7 @@ mwan3_create_iface_iptables()
 
 	mwan3_push_update -A "mwan3_iface_in_$1" \
 			  -i "$2" \
-			  -m set --match-set $connected_name src \
+			  -m set --match-set mwan3_connected src \
 			  -m mark --mark "0x0/$MMX_MASK" \
 			  -m comment --comment "default" \
 			  -j MARK --set-xmark "$MMX_DEFAULT/$MMX_MASK"
@@ -521,45 +524,17 @@ mwan3_delete_iface_iptables()
 
 }
 
-mwan3_create_iface_route()
+mwan3_get_routes()
 {
-	local id via metric V V_ IP family
-	local iface device cmd true_iface
-
-	iface=$1
-	device=$2
-	config_get family "$iface" family ipv4
-	mwan3_get_iface_id id "$iface"
-
-	[ -n "$id" ] || return 0
-
-	mwan3_get_true_iface true_iface $iface
-	if [ "$family" = "ipv4" ]; then
-		V_=""
-		IP="$IP4"
-	elif [ "$family" = "ipv6" ]; then
-		V_=6
-		IP="$IP6"
-	fi
-
-	network_get_gateway${V_} via "$true_iface"
-
-	{ [ -z "$via" ] || [ "$via" = "0.0.0.0" ] || [ "$via" = "::" ] ; } && unset via
-
-	network_get_metric metric "$true_iface"
-
-	$IP route flush table "$id"
-	cmd="$IP route add table $id default \
-	     ${via:+via} $via \
-	     ${metric:+metric} $metric \
-	     dev $2"
-	$cmd || LOG warn "ip cmd failed $cmd"
-
+	local source_routing
+	config_get_bool source_routing globals source_routing 0
+	[ $source_routing -eq 0 ] && unset source_routing
+	$IP route list table main | sed -ne "/^linkdown/T; s/expires \([0-9]\+\)sec//;s/error [0-9]\+//; ${source_routing:+s/default\(.*\) from [^ ]*/default\1/;} p" | uniq
 }
 
-mwan3_add_non_default_iface_route()
+mwan3_create_iface_route()
 {
-	local tid route_line family IP id
+	local tid route_line family IP id tbl
 	config_get family "$1" family ipv4
 	mwan3_get_iface_id id "$1"
 
@@ -571,10 +546,15 @@ mwan3_add_non_default_iface_route()
 		IP="$IP6"
 	fi
 
+	tbl=$($IP route list table $id 2>/dev/null)$'\n'
 	mwan3_update_dev_to_table
-	$IP route list table main | grep -v "^default\|linkdown\|^::/0\|^fe80::/64\|^unreachable" | while read -r route_line; do
+	mwan3_get_routes | while read -r route_line; do
 		mwan3_route_line_dev "tid" "$route_line" "$family"
+		{ [ -z "${route_line##default*}" ] || [ -z "${route_line##fe80::/64*}" ]; } && [ "$tid" != "$id" ] && continue
 		if [ -z "$tid" ] || [ "$tid" = "$id" ]; then
+			# possible that routes are already in the table
+			# if 'connected' was called after 'ifup'
+			[ -n "$tbl" ] && [ -z "${tbl##*$route_line$'\n'*}" ] && continue
 			$IP route add table $id $route_line ||
 				LOG warn "failed to add $route_line to table $id"
 		fi
@@ -582,63 +562,21 @@ mwan3_add_non_default_iface_route()
 	done
 }
 
-mwan3_add_all_nondefault_routes()
-{
-	local tid IP route_line ipv family active_tbls tid
-
-	add_active_tbls()
-	{
-		let tid++
-		config_get family "$1" family ipv4
-		[ "$family" != "$ipv" ] && return
-		$IP route list table $tid 2>/dev/null | grep -q "^default\|^::/0" && {
-			active_tbls="$active_tbls${tid} "
-		}
-	}
-
-	add_route()
-	{
-		let tid++
-		[ -n "${active_tbls##* $tid *}" ] && return
-		$IP route add table $tid $route_line ||
-			LOG warn "failed to add $route_line to table $tid"
-	}
-
-	mwan3_update_dev_to_table
-	for ipv in ipv4 ipv6; do
-		[ "$ipv" = "ipv6" ] && [ $NO_IPV6 -ne 0 ] && continue
-		if [ "$ipv" = "ipv4" ]; then
-			IP="$IP4"
-		elif [ "$ipv" = "ipv6" ]; then
-			IP="$IP6"
-		fi
-		tid=0
-		active_tbls=" "
-		config_foreach add_active_tbls interface
-		$IP route list table main | grep -v "^default\|linkdown\|^::/0\|^fe80::/64\|^unreachable" | while read -r route_line; do
-			mwan3_route_line_dev "tid" "$route_line" "$ipv"
-			if [ -n "$tid" ]; then
-				$IP route add table $tid $route_line
-			else
-				config_foreach add_route interface
-			fi
-		done
-	done
-}
 mwan3_delete_iface_route()
 {
-	local id
+	local id family
 
 	config_get family "$1" family ipv4
 	mwan3_get_iface_id id "$1"
 
-	[ -n "$id" ] || return 0
+	if [ -z "$id" ]; then
+		LOG warn "delete_iface_route: could not find table id for interface $1"
+		return 0
+	fi
 
 	if [ "$family" = "ipv4" ]; then
 		$IP4 route flush table "$id"
-	fi
-
-	if [ "$family" = "ipv6" ] && [ $NO_IPV6 -eq 0 ]; then
+	elif [ "$family" = "ipv6" ] && [ $NO_IPV6 -eq 0 ]; then
 		$IP6 route flush table "$id"
 	fi
 }
@@ -660,21 +598,16 @@ mwan3_create_iface_rules()
 		return
 	fi
 
-	while [ -n "$($IP rule list | awk '$1 == "'$((id+1000)):'"')" ]; do
-		$IP rule del pref $((id+1000))
-	done
-
-	while [ -n "$($IP rule list | awk '$1 == "'$((id+2000)):'"')" ]; do
-		$IP rule del pref $((id+2000))
-	done
+	mwan3_delete_iface_rules "$1"
 
 	$IP rule add pref $((id+1000)) iif "$2" lookup "$id"
 	$IP rule add pref $((id+2000)) fwmark "$(mwan3_id2mask id MMX_MASK)/$MMX_MASK" lookup "$id"
+	$IP rule add pref $((id+3000)) fwmark "$(mwan3_id2mask id MMX_MASK)/$MMX_MASK" unreachable
 }
 
 mwan3_delete_iface_rules()
 {
-	local id family IP
+	local id family IP rule_id
 
 	config_get family "$1" family ipv4
 	mwan3_get_iface_id id "$1"
@@ -689,12 +622,8 @@ mwan3_delete_iface_rules()
 		return
 	fi
 
-	while [ -n "$($IP rule list | awk '$1 == "'$((id+1000)):'"')" ]; do
-		$IP rule del pref $((id+1000))
-	done
-
-	while [ -n "$($IP rule list | awk '$1 == "'$((id+2000)):'"')" ]; do
-		$IP rule del pref $((id+2000))
+	for rule_id in $(ip rule list | awk '$1 % 1000 == '$id' && $1 > 1000 && $1 < 4000 {print substr($1,0,4)}'); do
+		$IP rule del pref $rule_id
 	done
 }
 
@@ -952,6 +881,10 @@ mwan3_set_user_iptables_rule()
 	config_get global_logging globals logging 0
 	config_get loglevel globals loglevel notice
 
+	[ "$ipv" = "ipv6" ] && [ $NO_IPV6 -ne 0 ] && return
+	[ "$family" = "ipv4" ] && [ "$ipv" = "ipv6" ] && return
+	[ "$family" = "ipv6" ] && [ "$ipv" = "ipv4" ] && return
+
 	if [ -n "$src_iface" ]; then
 		network_get_device src_dev "$src_iface"
 		if [ -z "$src_dev" ]; then
@@ -1013,10 +946,6 @@ mwan3_set_user_iptables_rule()
 		fi
 	fi
 
-	[ "$ipv" = "ipv6" ] && [ $NO_IPV6 -ne 0 ] && return
-	[ "$family" = "ipv4" ] && [ "$ipv" = "ipv6" ] && return
-	[ "$family" = "ipv6" ] && [ "$ipv" = "ipv4" ] && return
-
 	if [ $rule_policy -eq 1 ] && [ -n "${current##*-N $policy*}" ]; then
 		mwan3_push_update -N "$policy"
 	fi
@@ -1172,6 +1101,7 @@ mwan3_report_iface_status()
 		result="offline"
 	elif [ -n "$($IP rule | awk '$1 == "'$((id+1000)):'"')" ] && \
 		     [ -n "$($IP rule | awk '$1 == "'$((id+2000)):'"')" ] && \
+		     [ -n "$($IP rule | awk '$1 == "'$((id+3000)):'"')" ] && \
 		     [ -n "$($IPT -S mwan3_iface_in_$1 2> /dev/null)" ] && \
 		     [ -n "$($IP route list table $id default dev $device 2> /dev/null)" ]; then
 		json_init
diff --git a/net/mwan3/files/usr/sbin/mwan3 b/net/mwan3/files/usr/sbin/mwan3
index af66a70e1..5928172d9 100755
--- a/net/mwan3/files/usr/sbin/mwan3
+++ b/net/mwan3/files/usr/sbin/mwan3
@@ -163,7 +163,7 @@ start()
 	mwan3_set_general_iptables
 	config_foreach ifup interface
 	wait $hotplug_pids
-	mwan3_add_all_nondefault_routes
+	mwan3_add_all_routes
 	mwan3_set_policies_iptables
 	mwan3_set_user_rules
 
diff --git a/net/mwan3/files/usr/sbin/mwan3rtmon b/net/mwan3/files/usr/sbin/mwan3rtmon
index 8a7da7a8f..ff7183ae2 100755
--- a/net/mwan3/files/usr/sbin/mwan3rtmon
+++ b/net/mwan3/files/usr/sbin/mwan3rtmon
@@ -5,81 +5,139 @@
 . /lib/mwan3/mwan3.sh
 . /lib/mwan3/common.sh
 
+trap_with_arg()
+{
+	func="$1" ; shift
+	pid="$1" ; shift
+	for sig ; do
+		# shellcheck disable=SC2064
+		trap "$func $sig $pid" "$sig"
+	done
+}
+
+func_trap()
+{
+	kill -${1} ${2} 2>/dev/null
+}
+
+mwan3_add_all_routes()
+{
+	local tid IP IPT route_line family active_tbls tid initial_state
+	local ipv=$1
+
+	add_active_tbls()
+	{
+		let tid++
+		config_get family "$1" family ipv4
+		config_get initial_state "$1" initial_state "online"
+		[ "$family" != "$ipv" ] && return
+		if [ "$initial_state" = "online" ] && $IPT -S "mwan3_iface_in_$1" &> /dev/null; then
+			active_tbls="$active_tbls${tid} "
+		fi
+	}
+
+	add_route()
+	{
+		let tid++
+		[ -n "${active_tbls##* $tid *}" ] && return
+		$IP route add table $tid $route_line ||
+			LOG warn "failed to add $route_line to table $tid"
+	}
+
+	mwan3_update_dev_to_table
+	[ "$ipv" = "ipv6" ] && [ $NO_IPV6 -ne 0 ] && return
+	if [ "$ipv" = "ipv4" ]; then
+		IP="$IP4"
+		IPT="$IPT4"
+	elif [ "$ipv" = "ipv6" ]; then
+		IP="$IP6"
+		IPT="$IPT6"
+	fi
+	tid=0
+	active_tbls=" "
+	config_foreach add_active_tbls interface
+	[ $active_tbls = " " ] && return
+	mwan3_get_routes | while read -r route_line; do
+		mwan3_route_line_dev "tid" "$route_line" "$ipv"
+		if [ -n "$tid" ] && [ -z "${active_tbls##* $tid *}" ]; then
+			$IP route add table $tid $route_line
+		elif [ -n "${route_line##default*}" ] && [ -n "${route_line##fe80::/64*}" ]; then
+			config_foreach add_route interface
+		fi
+	done
+}
+
 mwan3_rtmon_route_handle()
 {
-	config_load mwan3
-	local section action route_line family tbl device metric tos dst line tid
+	local action route_line family tbl device line route_line_exp tid source_routing
+
 	route_line=${1##"Deleted "}
 	route_family=$2
 
+	config_get_boolean source_routing globals source_routing 0
+	[ $source_routing -eq 0 ] && unset source_routing
+
+	if [ "$route_line" = "$1" ]; then
+		action="replace"
+		route_line_exp="s/expires \([0-9]\+\)sec//;s/error [0-9]\+//; ${source_routing:+s/default\(.*\) from [^ ]*/default\1/}"
+		$IPS -! add mwan3_connected_${route_family##ip} ${route_line%% *}
+	else
+		action="del"
+		route_line_exp="s/expires [0-9]\+sec//;s/error [0-9]\+//; ${source_routing:+s/default\(.*\) from [^ ]*/default\1/}"
+		mwan3_set_connected_${route_family}
+	fi
+
 	if [ "$route_family" = "ipv4" ]; then
 		IP="$IP4"
 	elif [ "$route_family" = "ipv6" ] && [ $NO_IPV6 -eq 0 ]; then
 		IP="$IP6"
+		route_line=$(echo "$route_line" | sed "$route_line_exp")
 	else
+		LOG warn "route update called with invalid family - $route_family"
 		return
 	fi
 
-	if [ "$route_line" == "$1" ]; then
-		action="add"
-	else
-		action="del"
+	# don't try to add routes when link has gone down
+	if [ -z "${route_line##linkdown*}" ]; then
+		LOG debug "not adding route due to linkdown - skipping $route_line"
+		return
 	fi
 
-	# never add default route lines, since this is handled elsewhere
-	[ -z "${route_line##default*}" ] && return
-	[ -z "${route_line##::/0*}" ] && return
-	route_line=${route_line%% linkdown*}
-	route_line=${route_line%% unreachable*}
-	mwan3_update_dev_to_table
-	mwan3_route_line_dev "tid" "$route_line" "$route_family"
 	handle_route() {
-		tbl=$($IP route list table $tid)
-		if [ $action = "add" ]; then
-			echo "$tbl" | grep -q "^default\|^::/0" || return
-		else
-			[ -z "$tbl" ] && return
+		local iface=$1
+		tbl=$($IP route list table $tid 2>/dev/null)$'\n'
+
+		if [ "$(cat /var/run/mwan3track/$iface/STATUS)" != "online" ]; then
+			LOG debug "interface $iface is offline - skipping $route_line";
+			return
 		fi
-		# check that action needs to be performed. May not need to take action if:
-		# Got a route update on ipv6 where route is already in the table
-		# Got a delete event, but table was already flushed
-
-		[ $action = "add" ] && [ -z "${tbl##*$route_line*}" ] && return
-		[ $action = "del" ] && [ -n "${tbl##*$route_line*}" ] && return
-		network_get_device device "$section"
-		LOG debug "adjusting route $device: $IP route \"$action\" table $tid $route_line"
+
+		# check that action needs to be performed. May not need to take action if we
+		# got a delete event, but table was already flushed
+		if [ $action = "del" ] && [ -n "${tbl##*$route_line$'\n'*}" ]; then
+			LOG debug "skipping already deleted route table $tid - skipping $route_line"
+			return
+		fi
+
+		network_get_device device "$iface"
+		LOG debug "adjusting route $device: $IP route $action table $tid $route_line"
 		$IP route "$action" table $tid $route_line ||
 			LOG warn "failed: $IP route $action table $tid $route_line"
 	}
 	handle_route_cb(){
+		local iface=$1
 		let tid++
-		config_get family "$section" family ipv4
+		config_get family "$iface" family ipv4
 		[ "$family" != "$route_family" ] && return
-		handle_route
+		handle_route "$iface"
 	}
 
-	if [ $action = "add" ]; then
-		## handle old routes from 'change' or 'replace'
-		metric=${route_line##*metric }
-		[ "$metric" = "$route_line" ] && unset metric || metric=${metric%% *}
-
-		tos=${route_line##*tos }
-		[ "$tos" = "$route_line" ] && unset tos || tos=${tos%% *}
-
-		dst=${route_line%% *}
-		grep_line="$dst ${tos:+tos $tos}.*table [0-9].*${metric:+metric $metric}"
-		$IP route list table all | grep "$grep_line" | while read -r line; do
-			tbl=${line##*table }
-			tbl=${tbl%% *}
-			[ $tbl -gt $MWAN3_INTERFACE_MAX ] && continue
-			LOG debug "removing route on ip route change/replace: $line"
-			$IP route del $line
-		done
-	fi
+	mwan3_update_dev_to_table
+	mwan3_route_line_dev "tid" "$route_line" "$route_family"
 
 	if [ -n "$tid" ]; then
 		handle_route
-	else
+	elif [ -n "${route_line##default*}" ] && [ -n "${route_line##fe80::/64*}" ]; then
 		config_foreach handle_route_cb interface
 	fi
 }
@@ -91,19 +149,35 @@ main()
 	config_load mwan3
 	family=$1
 	[ -z $family ] && family=ipv4
-	if [ "$family" = ipv6 ]; then
+	if [ "$family" = "ipv6" ]; then
+		if [ $NO_IPV6 -ne 0 ]; then
+			LOG warn "mwan3rtmon started for ipv6, but ipv6 not enabled on system"
+			exit 1
+		fi
 		IP="$IP6"
 	else
 		IP="$IP4"
 	fi
 	mwan3_init
-
-	$IP monitor route | while read -r line; do
-		[ -z "${line##*table*}" ] && continue
-		LOG debug "handling route update $family $line"
-		mwan3_lock "service" "mwan3rtmon"
-		mwan3_rtmon_route_handle "$line" "$family"
-		mwan3_unlock "service" "mwan3rtmon"
-	done
+	mwan3_lock "mwan3rtmon" "start"
+	sh -c "echo \$\$; exec $IP monitor route" | {
+		read -r monitor_pid
+		trap_with_arg func_trap "$monitor_pid" SIGINT SIGTERM SIGKILL
+		while read -r line; do
+			[ -z "${line##*table*}" ] && continue
+			LOG debug "handling route update $family $line"
+			mwan3_lock "service" "mwan3rtmon"
+			mwan3_rtmon_route_handle "$line" "$family"
+			mwan3_unlock "service" "mwan3rtmon"
+		done
+	} &
+	child=$!
+	kill -SIGSTOP $child
+	trap_with_arg func_trap "$child" SIGINT SIGTERM SIGKILL
+	mwan3_set_connected_${family}
+	mwan3_add_all_routes ${family}
+	mwan3_unlock "mwan3rtmon" "start"
+	kill -SIGCONT $child
+	wait $!
 }
 main "$@"