# 报文

> $ arp -a ? (172.17.68.40) at ee:ff:ff:ff:ff:ff [ether] on eth0 ? (10.244.0.3) at 32:df:1c:fa:4e:cc [ether] on cni0 gateway (172.17.79.253) at ee:ff:ff:ff:ff:ff [ether] on

- 发布于: 2019-10-04
- 原文: https://shanyue.tech/posts/what-happens/arp/
- 标签: network
- 专栏: 互联网协议

---

```bash
$ arp -a
? (172.17.68.40) at ee:ff:ff:ff:ff:ff [ether] on eth0
? (10.244.0.3) at 32:df:1c:fa:4e:cc [ether] on cni0
gateway (172.17.79.253) at ee:ff:ff:ff:ff:ff [ether] on eth0
? (10.244.0.2) at 7e:1e:87:f7:b8:5e [ether] on cni0
? (169.254.169.254) at <incomplete> on eth0
? (10.244.1.0) at 86:81:cf:32:b8:76 [ether] PERM on flannel.1
```

## 报文