网络工程 - ping 广播地址 - 吾爱随笔录

我在用linux。我在网上的某个地方看到ping 255.255.255.255 会ping 到网段中的每个人。它将返回该子网中的每个 IP 地址。但是当我尝试

ashokkrishna@ashokkrishna-Lenovo-B560:~$ ping -b 255.255.255.255
WARNING: pinging broadcast address
PING 255.255.255.255 (255.255.255.255) 56(84) bytes of data.
64 bytes from 192.168.1.220: icmp_seq=1 ttl=64 time=100 ms
64 bytes from 192.168.1.220: icmp_seq=1 ttl=64 time=100 ms (DUP!)
64 bytes from 192.168.1.220: icmp_seq=2 ttl=64 time=128 ms
64 bytes from 192.168.1.220: icmp_seq=2 ttl=64 time=130 ms (DUP!)

我只收到一个 ip 的回复。如何获取每个 ip，我知道如何使用 nmap 获取每个 ip 但我在互联网上读到的内容在我的 senario 中完全相反，为什么？

与

ashokkrishna@ashokkrishna-Lenovo-B560:~$ ping -b 192.168.1.255
WARNING: pinging broadcast address
PING 192.168.1.255 (192.168.1.255) 56(84) bytes of data.
64 bytes from 192.168.1.220: icmp_seq=1 ttl=64 time=55.2 ms
64 bytes from 192.168.1.220: icmp_seq=1 ttl=64 time=66.6 ms (DUP!)
64 bytes from 192.168.1.220: icmp_seq=2 ttl=64 time=78.5 ms
64 bytes from 192.168.1.220: icmp_seq=2 ttl=64 time=79.2 ms (DUP!)