Hi, I presume this is for getting authorisation to sync with the main sync node. When you update the server’s IP you need to email mailing list to have this new IP authorised to connect to msync. Hope it helps. Kind Regards, Dominik Clouvider Limited From: centos-mirror-bounces at centos.org [mailto:centos-mirror-bounces at centos.org] On Behalf Of Nethub Online Sent: 05 September 2016 11:43 To: centos-mirror at centos.org Subject: [CentOS-mirror] mirror info about IPv4 address Hi, We would like to become a mirror of CentOS, there is a field "IPv4 address" we need to fill. May I know what it is for? As I know, mirror is using hostname or URL as the mirror address, if the IP is changed, we can update our DNS ourselves, whether we have to inform CentOS mirror team to update it? Ming -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.centos.org/pipermail/centos-mirror/attachments/20160905/b077cfa3/attachment-0006.html>