On Tue, Sep 13, 2016 at 10:59 AM, <aleksey.maksimov@it-kb.ru> wrote:

nslookup resolves names on the engine and hosts without ipv6 address:

# nslookup mirrorlist.centos.org

Server:         10.1.0.10
Address:        10.1.0.10#53

Non-authoritative answer:
Name:   mirrorlist.centos.org
Address: 67.219.148.138
Name:   mirrorlist.centos.org
Address: 85.236.43.108
Name:   mirrorlist.centos.org
Address: 212.69.166.138
Name:   mirrorlist.centos.org
Address: 216.176.179.218

Why oVirt updates checking process trying to use ipv6 ?
 

 

 

I had a similar problem some days ago with a CentOS 7 system, but it was general and unrelated to ovirt itself.

If I remember correctly the problem was that originally it was configured by anaconda with NetworkManager and ipv6 and yum worked well.

Then I stopped and disabled NetworkManager service (the "network" service is already enabled by default, so no action for it)  but I didn't remove all the IPV6 entries inside the anaconda-configured ifcfg-eno16780032 file in my /etc/sysconfig/network-scripts directory

I also created a /etc/sysctl.d/noipv6.conf file with:

net.ipv6.conf.all.disable_ipv6 = 1

net.ipv6.conf.default.disable_ipv6 = 1

 

But I got the ipv6 problem when trying in general to run "yum update"

After wiping ipv6 entries in ifcfg-xxx file all went well.

Could it be that in some ifcfg-* files you still have any reference to ipv6?

 

Also, I had to run 

systemctl restart network

 

HIH,

Gianluca