If you want to know the delay for a certain hop in your connection, you can use "traceroute" (read the manpage for info on using it)
For using ping and traceroute over IPv6, you need ping6 and traceroute6.
most of the time I use it on of these ways:
ping -c4 <hostname>
ping -c4 <IP-address>
The "-c4" option says to ping 4 times (-c5 would do it 5 times). Without it, the ping command just keeps going on, and you have to stop it with Ctrl-C