mwan3: Add support for nslookup track method

Also, a couple of small fixes for the nping method.

Signed-off-by: Brian J. Murrell <[email protected]>

net/mwan3/Makefile

@@ -8,7 +8,7 @@
 include $(TOPDIR)/rules.mk
 
 PKG_NAME:=mwan3
-PKG_VERSION:=2.11.16
+PKG_VERSION:=2.11.17
 PKG_RELEASE:=5
 PKG_MAINTAINER:=Florian Eckert <[email protected]>, \
 		Aaron Goodman <[email protected]>

net/mwan3/files/usr/sbin/mwan3track

@@ -91,6 +91,12 @@ validate_track_method() {
 				return 1
 			}
 			;;
+		nslookup)
+			command -v nslookup 1>/dev/null 2>&1 || {
+				LOG warn "Missing nslookup. Please install busybox package."
+				return 1
+			}
+			;;
 		*)
 			LOG warn "Unsupported tracking method: $track_method"
 			return 2
@@ -322,11 +328,17 @@ main() {
 						fi
 					;;
 					nping-*)
-						WRAP nping -c $count $track_ip --${FAMILY#nping-} > $TRACK_OUTPUT &
+						WRAP nping -${FAMILY#ipv} -c $count $track_ip --${track_method#nping-} > $TRACK_OUTPUT &
 						TRACK_PID=$!
 						wait $TRACK_PID
 						result=$(grep Lost $TRACK_OUTPUT | awk '{print $12}')
 					;;
+					nslookup)
+						WRAP nslookup www.google.com $track_ip > $TRACK_OUTPUT &
+						TRACK_PID=$!
+						wait $TRACK_PID
+						result=$?
+					;;
 				esac
 				do_log=""
 				if [ $check_quality -eq 0 ]; then