linux - arp -d 地址 : Operation not permitted linux

Question

我想在 Linux 中清除 arp 缓存，我已经尝试用
IP -s -s neigh flush all还有 arp -d <specific IP address>
两者都不行...

Answer 1

检查您的 arp 二进制文件位于何处:

$ which arp
/usr/sbin/arp

sbin 建议二进制文件由s super 用户运行。 IT 触及您不想让普通用户触及的东西，如手册页中所述:

arp -d address

will delete a ARP table entry. Root or netadmin priveledge is required to do this. The entry is found by IP address. If a hostname is given, it will be resolved before looking up the entry in the ARP table.

您需要以 root 身份运行它，例如使用 sudo 应该适合您:

sudo arp -d <specific IP address>