diff --git a/net/adblock/Makefile b/net/adblock/Makefile
index a94da6644..414fa78bd 100644
--- a/net/adblock/Makefile
+++ b/net/adblock/Makefile
@@ -6,7 +6,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=adblock
-PKG_VERSION:=2.1.2
+PKG_VERSION:=2.1.5
 PKG_RELEASE:=1
 PKG_LICENSE:=GPL-3.0+
 PKG_MAINTAINER:=Dirk Brenken <dev@brenken.org>
diff --git a/net/adblock/files/README.md b/net/adblock/files/README.md
index 32be3ba5a..fcfeaf22e 100644
--- a/net/adblock/files/README.md
+++ b/net/adblock/files/README.md
@@ -64,7 +64,7 @@ A lot of people already use adblocker plugins within their desktop browsers, but
 * procd based hotplug support, the adblock start will be triggered by interface triggers
 * suspend & resume adblock actions temporarily without block list reloading
 * runtime statistics via ubus service call
-* query function to quickly identify blocked (sub-)domains, i.e. for whitelisting
+* query function to quickly identify blocked (sub-)domains, e.g. for whitelisting
 * automatic block list backup & restore, backups will be (de-)compressed and restored on the fly
 * add new adblock sources on your own via uci config
 
@@ -72,7 +72,10 @@ A lot of people already use adblocker plugins within their desktop browsers, but
 * [openwrt](https://openwrt.org), tested with latest stable release (Chaos Calmer) and with current trunk (Designated Driver)
 * [LEDE project](https://www.lede-project.org), tested with trunk > r98
 * a usual setup with an enabled dns server at minimum - dump AP modes without a working dns server are _not_ supported
-* a download utility: 'wget', 'aria2c', 'uclient-fetch' or 'curl' are supported (only full versions with ssl support). Normally you should use the pre-configured default 'wget'. If you need a smaller memory footprint try 'uclient-fetch' without openssl dependency.
+* a download utility: full versions (with ssl support) of 'wget', 'uclient-fetch', 'aria2c' or 'curl' are supported - the Chaos Calmer built-in busybox wget is not
+    * Chaos Calmer: download & install the external 'wget' package
+    * Designated Driver/Trunk: use built-in 'uclient-fetch' or download & install the external 'wget' package
+    * for more configuration options see examples below
 
 ## OpenWrt / LEDE trunk Installation & Usage
 * install 'adblock' (_opkg install adblock_) and that's it - the adblock start will be automatically triggered by procd interface triggers
@@ -98,7 +101,7 @@ A lot of people already use adblocker plugins within their desktop browsers, but
 * **debug output:** for script debugging please set the config option 'adb\_debug' to '1' and check the runtime output with _logread -e "adblock"_
 * **storage expansion:** to process and store all block list sources at once it might helpful to enlarge your temp directory with a swap partition => see [openwrt wiki](https://wiki.openwrt.org/doc/uci/fstab) for further details
 * **add white-/blacklist entries:** add domain white- or blacklist entries to always-allow or -deny certain (sub) domains, by default both lists are empty and located in _/etc/adblock_. Please add one domain per line - ip addresses, wildcards & regex are _not_ allowed (see example below)
-* **backup & restore block lists:** enable this feature, to restore automatically the latest compressed backup of your block lists in case of any processing error (i.e. a single block list source is not available during update). Please use an (external) solid partition and _not_ your volatile router temp directory for this
+* **backup & restore block lists:** enable this feature, to restore automatically the latest compressed backup of your block lists in case of any processing error (e.g. a single block list source is not available during update). Please use an (external) solid partition and _not_ your volatile router temp directory for this
 * **scheduled list updates:** for a scheduled call of the adblock service add an appropriate crontab entry (see example below)
 * **restrict/disable procd interface trigger:** to restrict the procd interface trigger to a (list of) certain wan interface(s) or to disable it at all, set 'adb\_iface' to an existing interface like 'wan' or to a non-existing like 'false'
 * **suspend & resume adblocking:** to quickly switch the adblock service 'on' or 'off', simply use _/etc/init.d/adblock [suspend|resume]_
@@ -143,7 +146,7 @@ aria2c:
   option adb_fetch '/usr/bin/aria2c'
   option adb_fetchparm '-q --max-tries=1 --timeout=5 --allow-overwrite=true --auto-file-renaming=false --check-certificate=false -o'
 
-uclient-fetch:
+uclient-fetch (not supported in Chaos Calmer):
   option adb_fetch '/bin/uclient-fetch'
   option adb_fetchparm '-q --timeout=5 --no-check-certificate -O'
 
@@ -155,7 +158,7 @@ curl:
 **receive adblock statistics via ubus:**
 <pre><code>
 ubus call service list '{"name":"adblock_stats"}'
-This will output the active block lists and other runtime information as JSON, i.e.:
+This will output the active block lists and other runtime information as JSON, e.g.:
 {
     "adblock_stats": {
         "instances": {
@@ -216,16 +219,18 @@ This entry does not remove:
   www.adwhere.com
 </code></pre>
   
-**query active block lists for a certain (sub-)domain, i.e. for whitelisting:**
+**query active block lists for a certain (sub-)domain, e.g. for whitelisting:**
 <pre><code>
-/etc/init.d/adblock query "example.www.doubleclick.net"
-:: distinct results for domain 'example.www.doubleclick.net' (overall 0)
-   no matches in active block lists
-:: distinct results for domain 'www.doubleclick.net' (overall 1)
-   adb_list.securemecca : www.doubleclick.net
-:: distinct results for domain 'doubleclick.net' (overall 127)
-   adb_list.adaway      : ad-g.doubleclick.net
-   adb_list.securemecca : 1168945.fls.doubleclick.net
+/etc/init.d/adblock query example.www.doubleclick.net
+::: distinct results for domain 'example.www.doubleclick.net'
+ no match
+::: distinct results for domain 'www.doubleclick.net'
+ adb_list.sysctl      : www.doubleclick.net
+::: distinct results for domain 'doubleclick.net'
+ adb_list.adaway      : ad-g.doubleclick.net
+ adb_list.securemecca : 1168945.fls.doubleclick.net
+ adb_list.sysctl      : 1435575.fls.doubleclick.net
+ adb_list.whocares    : 3ad.doubleclick.net
 
 The query function checks against the submitted (sub-)domain and recurses automatically to the upper top level domain(s).
 For every domain it returns the overall count plus a distinct list of active block lists with the first relevant result.
diff --git a/net/adblock/files/adblock.init b/net/adblock/files/adblock.init
index da6d9a119..fda5d6261 100755
--- a/net/adblock/files/adblock.init
+++ b/net/adblock/files/adblock.init
@@ -24,10 +24,10 @@ boot()
         if [ -n "${wanif4}" ] || [ -n "${wanif6}" ]
         then
             rc_procd start_service
-        else
-            rc_procd service_triggers
+            return 0
         fi
     fi
+    rc_procd service_triggers
 }
 
 start_service()
diff --git a/net/adblock/files/adblock.sh b/net/adblock/files/adblock.sh
index 2573400cd..c936a9795 100755
--- a/net/adblock/files/adblock.sh
+++ b/net/adblock/files/adblock.sh
@@ -10,7 +10,7 @@
 #
 LC_ALL=C
 PATH="/usr/sbin:/usr/bin:/sbin:/bin"
-adb_ver="2.1.2"
+adb_ver="2.1.5"
 adb_enabled=1
 adb_debug=0
 adb_whitelist="/etc/adblock/adblock.whitelist"
@@ -31,7 +31,7 @@ f_envload()
         f_log "error" "status ::: system library not found"
     fi
 
-    # set dns server environment
+    # set dns backend environment
     #
     adb_dns="$(uci -q get adblock.global.adb_dns)"
     if [ "${adb_dns}" = "unbound" ]
@@ -109,9 +109,14 @@ f_envcheck()
 
     # check fetch utility
     #
-    if [ -z "${adb_fetch}" ] || [ ! -f "${adb_fetch}" ]
+    if [ -z "${adb_fetch}" ] || [ -z "${adb_fetchparm}" ] || [ ! -f "${adb_fetch}" ] || [ "$(readlink -fn "${adb_fetch}")" = "/bin/busybox" ]
     then
-        f_log "error" "status ::: no download utility with ssl support found/configured"
+        f_log "error" "status ::: required download utility with ssl support not found, e.g. install full 'wget' package"
+    fi
+    if [ "${adb_fetch}" = "/usr/bin/wget" ] && [ "$(readlink -fn "${adb_fetch}")" = "/bin/uclient-fetch" ]
+    then
+        adb_fetch="/bin/uclient-fetch"
+        adb_fetchparm="-q --timeout=5 --no-check-certificate -O"
     fi
 
     # create dns hideout directory
@@ -119,7 +124,7 @@ f_envcheck()
     if [ ! -d "${adb_dnshidedir}" ]
     then
         mkdir -p -m 660 "${adb_dnshidedir}"
-        chown -R "${adb_dns}":"${adb_dns}" "${adb_dnshidedir}"
+        chown -R "${adb_dns}":"${adb_dns}" "${adb_dnshidedir}" 2>/dev/null
     else
         rm -f "${adb_dnshidedir}/${adb_dnsprefix}"*
     fi
@@ -157,7 +162,7 @@ f_rmdns()
     ubus call service delete "{\"name\":\"adblock_stats\",\"instances\":\"stats\"}" 2>/dev/null
 }
 
-# f_dnsrestart: restart the dns server
+# f_dnsrestart: restart the dns backend
 #
 f_dnsrestart()
 {
@@ -254,7 +259,7 @@ f_query()
          printf "%s\n" "::: no active block lists found, please start adblock first"
     elif [ -z "${domain}" ] || [ "${domain}" = "${tld}" ]
     then
-        printf "%s\n" "::: invalid domain input, please submit a specific (sub-)domain, i.e. 'www.abc.xyz'"
+        printf "%s\n" "::: invalid domain input, please submit a specific (sub-)domain, e.g. 'www.abc.xyz'"
     else
         cd "${adb_dnsdir}"
         while [ "${domain}" != "${tld}" ]
@@ -286,6 +291,7 @@ f_log()
         logger -t "adblock-[${adb_ver}] ${class}" "${log_msg}"
         if [ "${class}" = "error" ]
         then
+            logger -t "adblock-[${adb_ver}] ${class}" "Please also check the online documentation 'https://github.com/openwrt/packages/blob/master/net/adblock/files/README.md'"
             f_rmtemp
             f_rmdns
             f_dnsrestart
@@ -437,7 +443,7 @@ f_main()
         fi
     done
 
-    # restart dns server and write statistics
+    # restart the dns backend and write statistics to procd service instance
     #
     chown "${adb_dns}":"${adb_dns}" "${adb_dnsdir}/${adb_dnsprefix}"* 2>/dev/null
     f_dnsrestart
@@ -457,7 +463,7 @@ f_main()
         return 0
     fi
     f_debug
-    f_log "error" "status ::: dns server restart with active block lists failed (${sysver})"
+    f_log "error" "status ::: dns backend restart with active block lists failed (${sysver})"
 }
 
 # handle different adblock actions
@@ -486,4 +492,4 @@ then
             ;;
     esac
 fi
-exit 0
\ No newline at end of file
+exit 0