aucun soucis de mon côté :
[gizmo@ezekyel ~]$ ping google.fr
PING google.fr (216.58.206.227): 56 data bytes
64 bytes from 216.58.206.227: icmp_seq=0 ttl=55 time=13.644 ms
64 bytes from 216.58.206.227: icmp_seq=1 ttl=55 time=13.078 ms
^C
--- google.fr ping statistics ---
2 packets transmitted, 2 packets received, 0.0% packet loss
round-trip min/avg/max/stddev = 13.078/13.361/13.644/0.283 ms
[gizmo@ezekyel ~]$ ping6 google.fr
PING6(56=40+8+8 bytes) 2a01:e34:ed0b:51b0:215
fe8b:5934 --> 2a00
4007:808::2003
16 bytes from 2a00
4007:808::2003, icmp_seq=0 hlim=57 time=12.995 ms
16 bytes from 2a00
4007:808::2003, icmp_seq=1 hlim=57 time=12.960 ms
^C
--- google.fr ping6 statistics ---
2 packets transmitted, 2 packets received, 0.0% packet loss
round-trip min/avg/max/std-dev = 12.960/12.977/12.995/0.018 ms
pong