fix tc race

tools/teardown_bridge_capture.sh

@@ -26,6 +26,7 @@ if [[ -n "$BRIDGE" ]] && ip link show "$BRIDGE" >/dev/null 2>&1; then
   done < <(bridge link show master "$BRIDGE" | awk -F': ' '{print $2}' | awk '{print $1}')
 fi
 
+tc qdisc del dev "$MIRROR_IF" clsact 2>/dev/null || true
 tc qdisc del dev "$CAPTURE_IF" clsact 2>/dev/null || true
 
 if ip link show "$MIRROR_IF" >/dev/null 2>&1; then