diff --git a/package/kit-busrouter/files/usr/lib/busrouter/telemetry-synology.sh b/package/kit-busrouter/files/usr/lib/busrouter/telemetry-synology.sh
index 5aec31b..f87848e 100755
--- a/package/kit-busrouter/files/usr/lib/busrouter/telemetry-synology.sh
+++ b/package/kit-busrouter/files/usr/lib/busrouter/telemetry-synology.sh
@@ -239,16 +239,19 @@ _ping_iface() {
 	# Extract loss
 	_loss=$(echo "$_out" | sed -n 's/.* \([0-9]*\)% packet loss.*/\1/p')
 	[ -z "$_loss" ] && _loss="null"
-	# If ICMP reports 100% loss, try HTTP probe — Eyeride NAT blocks ICMP but passes HTTP.
+	# If ICMP to internet gives 100% loss, ping the local gateway —
+	# Eyeride NAT drops internet ICMP but the gateway (192.168.10.1) is reachable locally.
 	if [ "$_loss" = "100" ]; then
-		_t0=$(date +%s%3N 2>/dev/null || date +%s)
-		_hcode=$(curl -s --interface "$_iface" --connect-timeout 5 --max-time 8 \
-			-o /dev/null -w "%{http_code}" http://1.1.1.1 2>/dev/null)
-		_t1=$(date +%s%3N 2>/dev/null || date +%s)
-		if [ -n "$_hcode" ] && [ "$_hcode" != "000" ]; then
-			_loss="0"
-			[ -z "$_avg" ] || [ "$_avg" = "null" ] && \
-				_avg=$(awk "BEGIN { printf \"%.0f\", ${_t1} - ${_t0} }" 2>/dev/null)
+		_gw=$(ip route show 2>/dev/null | grep "dev $_iface" | grep -v "^default" | awk '/via/{print $3; exit} /kernel/{print ""}' | head -1)
+		[ -z "$_gw" ] && _gw=$(ip route show default 2>/dev/null | grep "dev $_iface" | awk '{print $3}' | head -1)
+		if [ -n "$_gw" ]; then
+			_gw_out=$(ping -c 3 -W 2 "$_gw" 2>/dev/null)
+			_gw_loss=$(echo "$_gw_out" | sed -n 's/.* \([0-9]*\)% packet loss.*/\1/p')
+			if [ -n "$_gw_loss" ] && [ "$_gw_loss" != "100" ]; then
+				_loss="$_gw_loss"
+				_avg=$(echo "$_gw_out" | tail -1 | sed -n 's/.*=\ [0-9.]*\/\([0-9.]*\)\/.*/\1/p')
+				[ -z "$_avg" ] && _avg="null"
+			fi
 		fi
 	fi
 	printf '%s %s %s\n' "${_avg}" "${_jitter}" "${_loss}" | tr -d '\n\r'