[CentOS-mirror] Change mirror IP

Horizon Support kirjoitti 10.12.2018 klo 16.19:
> Hello,
> 
> We change our mirror to new IP. Please update new IP for your mirror 
> (mirror.horizon.vn)
> 
> IPv4: 103.130.59.22
> IPv6: 2403:b3c0:0:3::22

Hi, these have now been updated. And now that I have your attention, I'd 
like to point out that your mirror does not seem to be reachable over 
IPv6 even though it has an IPv6 address in DNS:

$ curl -6 http://mirror.horizon.vn/centos/timestamp.txt
curl: (7) Failed connect to mirror.horizon.vn:80; Connection refused

Maybe a firewall issue, or your web server is not listening on the 
correct IPv6 address?