Something appears to be wrong with the routing on your… the DNS is correct and we can ping google and various other places via IPv6 from that host.

From: FreeSWITCH-users [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Sergey Safarov
Sent: Friday, June 30, 2017 2:40 AM
To: FreeSWITCH Users Help <freeswitch-users@lists.freeswitch.org>
Subject: [Freeswitch-users] may be fix DNS?

[safarov@safarov ~]$ ping files.freeswitch.org

PING files.freeswitch.org(2607:f348:1021::7 (2607:f348:1021::7)) 56 data bytes

From 2a05:ddc0::48 (2a05:ddc0::48) icmp_seq=1 Destination unreachable: No route

From 2a05:ddc0::48 (2a05:ddc0::48) icmp_seq=2 Destination unreachable: No route