---
title: ecn_fallback_synloss
framework: Kernel
role: symbol
role_heading: Instance Property
platforms: [macOS 13.0+]
path: kernel/ifnet_stats_per_flow/3944079-ecn_fallback_synloss
---

# ecn_fallback_synloss

## Declaration

```occ
u_int16_t ecn_fallback_synloss:1;
```