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- how does ping zero works? - Unix Linux Stack Exchange
can anybody explain how does ping 0 works and it translate to 127 0 0 1 [champu@testsrv ]$ ping 0 PING 0 (127 0 0 1) 56(84) bytes of data 64 bytes from 127 0 0 1: icmp_seq=1 ttl=64 time=0 039 ms
- What is the difference between ping localhost and ping 127. 0. 0. 1?
The ping command shows the address it resolved the name to In this case it resolved to the IPv6 localhost address, ::1 On the other hand, 127 0 0 1 is an IPv4 address, so it explicitly makes ping use IPv4 The sysctl you used only affects IPv4 pings, so you get replies for ::1, but not for 127 0 0 1 The address you get from resolving localhost depends on how your DNS is resolver is set up
- Destination Host Unreachable - Unix Linux Stack Exchange
"Destination host unreachable" means that there was no ARP response (in case of ethernet connection) at appropriate route exit point, which in case of your private LAN should be your Linux laptop ifself (i e both the laptops reside in the same network 192 168 0 0 24), and if they are in distinct networks it is the router that doesn't either see the other side or filters the traffic In
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