Execute mais estes comandos, pf., pra gente avaliar.
ping -4 -c 4 8.8.8.8
ping -4 -c 4 www.google.com
ping -6 -c 4 2800:3f0:4004:809::2004
ping -6 -c 4 www.google.com
Olá. Executei e o resulta está aqui embaixo.
rosanesilva@rss:~$ ping -4 -c 4 8.8.8.8
PING 8.8.8.8 (8.8.8.

56(84) bytes of data.
64 bytes from 8.8.8.8: icmp_seq=1 ttl=56 time=41.0 ms
64 bytes from 8.8.8.8: icmp_seq=2 ttl=56 time=43.2 ms
64 bytes from 8.8.8.8: icmp_seq=3 ttl=56 time=40.8 ms
64 bytes from 8.8.8.8: icmp_seq=4 ttl=56 time=40.7 ms
--- 8.8.8.8 ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3005ms
rtt min/avg/max/mdev = 40.785/41.478/43.206/1.034 ms
rosanesilva@rss:~$ ping -4 -c 4
www.google.comPING
www.google.com (172.217.172.196) 56(84) bytes of data.
64 bytes from gru14s14-in-f4.1e100.net (172.217.172.196): icmp_seq=1 ttl=56 time=40.5 ms
64 bytes from gru14s14-in-f4.1e100.net (172.217.172.196): icmp_seq=2 ttl=56 time=42.3 ms
64 bytes from gru14s14-in-f4.1e100.net (172.217.172.196): icmp_seq=3 ttl=56 time=40.5 ms
64 bytes from gru14s14-in-f4.1e100.net (172.217.172.196): icmp_seq=4 ttl=56 time=40.9 ms
---
www.google.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3003ms
rtt min/avg/max/mdev = 40.518/41.090/42.369/0.770 ms
rosanesilva@rss:~$ ping -6 -c 4 2800:3f0:4004:809::2004
PING 2800:3f0:4004:809::2004(2800:3f0:4004:809::2004) 56 data bytes
--- 2800:3f0:4004:809::2004 ping statistics ---
4 packets transmitted, 0 received, 100% packet loss, time 3070ms
rosanesilva@rss:~$ ping -4 -c 4
www.google.comPING
www.google.com (172.217.172.196) 56(84) bytes of data.
64 bytes from gru14s14-in-f4.1e100.net (172.217.172.196): icmp_seq=1 ttl=56 time=40.7 ms
64 bytes from gru14s14-in-f4.1e100.net (172.217.172.196): icmp_seq=2 ttl=56 time=40.1 ms
64 bytes from gru14s14-in-f4.1e100.net (172.217.172.196): icmp_seq=3 ttl=56 time=40.9 ms
64 bytes from gru14s14-in-f4.1e100.net (172.217.172.196): icmp_seq=4 ttl=56 time=40.6 ms
---
www.google.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3004ms
rtt min/avg/max/mdev = 40.143/40.633/40.938/0.298 ms
rosanesilva@rss:~$