fping is a program to send ICMP echo probes to network hosts, similar to ping, but much better performing when pinging multiple hosts. fping has a very long history: Roland Schemers did publish a first version of it in 1992 and it has established itself since then as a standard tool for network diagnostics and statistics.

fping is a program like ping which uses the Internet Control Message Protocol ( ICMP ) echo request to determine if a target host is responding. fping differs from ping in that you can specify any number of targets on the command line, or specify a file containing the lists of targets to ping.

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example, doing 'fping google.com' is going to ping the IPv6 IP of google.com on IPv6-enabled hosts. If you need exact compatibility with old versions, you can configure and

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./configure --disable-ipv4 --program-suffix=6; make clean install ##### Option -n, not the same as -d anymore Option -n / --name is now doing a reverse-DNS lookups on host addresses, only if they are given as IP address, but not for hostnames. For example, if you write 'fping -n google.com', fping would previously do a

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fping 2.4b2: 70.6s fping 3.0: 24.2s * fping -i 10 -q -C 3 -p 15000 -t 3000 (min-interval: 10ms, pings: 3, period: 15 s, timeout of last ping: 3 s) theoretical time: 10s + 2 * 15s + 3s - 10ms * (999-984) = 42.85s fping 2.4b2: 63.0s (user: 0.090s, sys: 0.300s) fping 3.0: 42.94s (user: 0.010s, sys: 0.110s)