arp -a显示的内容是什么

通过网络连接你电脑或给你电脑发过信息的IP。

-a Displays current ARP entries by interrogating the current
protocol data. If inet_addr is specified, the IP and Physica
addresses for only the specified computer are displayed. If
more than one network interface uses ARP, entries for each AR
table are displayed.
-g Same as -a.
inet_addr Specifies an internet address.
-N if_addr Displays the ARP entries for the network interface specified
by if_addr.
-d Deletes the host specified by inet_addr. inet_addr may be
wildcarded with * to delete all hosts.
-s Adds the host and associates the Internet address inet_addr
with the Physical address eth_addr. The Physical address is
given as 6 hexadecimal bytes separated by hyphens. The entry
i