---
title: tcpi_ecn_capable_packets_lost
framework: Kernel
role: symbol
role_heading: Instance Property
platforms: [macOS 14.0+]
path: kernel/tcp_info/4160856-tcpi_ecn_capable_packets_lost
---

# tcpi_ecn_capable_packets_lost

## Declaration

```occ
uint64_t tcpi_ecn_capable_packets_lost;
```