Not possible to bind with 3g

omr-tracker/files/bin/omr-tracker

@@ -93,6 +93,20 @@ _ping() {
 	local host=$1
 	local device=$2
 	local localip=$3
+	if [ "$(uci -q get network.$OMR_TRACKER_INTERFACE.proto)" = "3g" ]; then
+		ret=$(ping -I "${device}" \
+			-w "$OMR_TRACKER_TIMEOUT" \
+			-c 1 \
+			-q \
+			"${host}"
+		) && echo "$ret" | grep -sq " 0% packet loss" && {
+			if [ "$localip" = "yes" ]; then
+				OMR_TRACKER_LATENCY=$(echo "$ret" | cut -d "/" -s -f5 | cut -d "." -f1)
+				_update_rto "$OMR_TRACKER_LATENCY"
+			fi
+			return
+		}
+	else
 		ret=$(ping -B -I "${device}" \
 			-w "$OMR_TRACKER_TIMEOUT" \
 			-c 1 \
@@ -105,6 +119,7 @@ _ping() {
 			fi
 			return
 		}
+	fi
 	false
 }