gluon-respondd: add delay to mesh-wide multicast requests

Mesh-wide multicast requests are answered with a random delay of up to 10s.

package/gluon-respondd/files/etc/init.d/gluon-respondd

@@ -4,17 +4,22 @@ USE_PROCD=1
 START=50
 
 DAEMON=/usr/bin/respondd
+MAXDELAY=10
 
 start_service() {
-	DEVS=""
-	for dev in $( ubus call network.interface dump | jsonfilter \
-		-e "@.interface[@.proto='gluon_mesh' && @.up=true].device" \
-		-e "@.interface[@.interface='$(cat /lib/gluon/respondd/client.dev 2>/dev/null)' && @.up=true].device")
-	do
-		DEVS="$DEVS -i $dev"
+	local ifdump="$(ubus call network.interface dump)"
+
+	local devs=''
+	local dev
+	for dev in $(echo "$ifdump" | jsonfilter -e "@.interface[@.proto='gluon_mesh' && @.up=true].device"); do
+		devs="$devs -i $dev"
+	done
+	for dev in $(echo "$ifdump" | jsonfilter -e "@.interface[@.interface='$(cat /lib/gluon/respondd/client.dev 2>/dev/null)' && @.up=true].device"); do
+		devs="$devs -i $dev -t $MAXDELAY"
 	done
+
 	procd_open_instance
-	procd_set_param command $DAEMON -g ff02::2:1001 -p 1001 -d /lib/gluon/respondd $DEVS
+	procd_set_param command $DAEMON -g ff02::2:1001 -p 1001 -d /lib/gluon/respondd $devs
 	procd_set_param respawn ${respawn_threshold:-3600} ${respawn_timeout:-5} ${respawn_retry:-5}
 	procd_set_param stderr 1
 	procd_close_instance