unbound: fix boot time and default run directory

Unbound struggles with boot ifup, so procd triggers changed to push
outside of this noise. Unbound has run in /var/lib/unbound/, so chroot
(jail) protects /etc/, and it can save flash wear. Compiled defaults
reflect this now, so Unbound tools are easier run on the command line.

Signed-off-by: Eric Luehrsen <ericluehrsen@gmail.com>

net/unbound/files/unbound.init

@@ -54,22 +54,31 @@ stop_service() {
 ##############################################################################
 
 service_triggers() {
-  local trigger
   local legacy=$( uci_get unbound.@unbound[0].trigger )
   local triggers=$( uci_get unbound.@unbound[0].trigger_interface )
+  local trigger="$triggers $legacy"
 
-  triggers="$triggers $legacy"
-  PROCD_RELOAD_DELAY=2000
-  procd_add_reload_trigger "unbound"
+  . /usr/lib/unbound/defaults.sh
+
+
+  if [ ! -f "$UB_TOTAL_CONF" -o -n "$UB_BOOT" ] ; then
+    # Unbound is can be a bit heavy, so wait some on first start but any
+    # interface coming up affects the trigger and delay so guarantee start
+    procd_add_raw_trigger "interface.*.up" 5000 /etc/init.d/unbound restart
+
+  elif [ -n "$triggers" ] ; then
+    PROCD_RELOAD_DELAY=2000
+    procd_add_reload_trigger "unbound" "dhcp"
 
 
-  if [ -n "$triggers" ] ; then
     for trigger in $triggers ; do
-      # due to some netifd/procd interactions with IP6, limit interfaces
+      # User selected triggers to restart at any other time
       procd_add_reload_interface_trigger "$trigger"
     done
+
   else
-    procd_add_raw_trigger "interface.*.up" 2000 /etc/init.d/unbound reload
+    PROCD_RELOAD_DELAY=2000
+    procd_add_reload_trigger "unbound" "dhcp"
   fi
 }