История изменений

root@localtls:~# ping -4 acme-v02.api.letsencrypt.org
v02.api.letsencrypt.orgPING ca80a1adb12a4fbdac5ffcbc944e9a61.pacloudflare.com (172.65.32.248) 56(84) bytes of data.

64 bytes from 172.65.32.248 (172.65.32.248): icmp_seq=1 ttl=61 time=2.45 ms
64 bytes from 172.65.32.248 (172.65.32.248): icmp_seq=2 ttl=61 time=2.39 ms
64 bytes from 172.65.32.248 (172.65.32.248): icmp_seq=3 ttl=61 time=2.34 ms
64 bytes from 172.65.32.248 (172.65.32.248): icmp_seq=4 ttl=61 time=2.38 ms
^C
--- ca80a1adb12a4fbdac5ffcbc944e9a61.pacloudflare.com ping statistics ---
4 packets transmitted, 4 received, 0% packet loss, time 3003ms
rtt min/avg/max/mdev = 2.337/2.388/2.445/0.038 ms
root@localtls:~# ping -6 acme-v02.api.letsencrypt.org
ping: connect: Network is unreachable
root@localtls:~#