resolv.conf is not taking entry of DNS IPV6.

["Veetil, Vyshnav" <Vyshnav Veetil harman com>]

Hi,

 

We are facing some issue with Network Manager and posted the problem on CentOS community because we are working on CentOS but they were saying that the problem is in Network Manager package.

 

We are using below version of Network Manager:

- NetworkManager-0.8.1-107.el6.x86_64

- NetworkManager-glib-0.8.1-107.el6.x86_64

 

Please help us to understand why our resolv.conf is not taking entry of DNS IPV6.

 

Below is the post we posted on centos centos org site:

 

-----Original Message-----

From: Maheshwari, Shagun

Sent: Monday, June 25, 2018 4:25 PM

To: centos centos org

Subject: Re: NetworkManager updating resolv.cfg

 

Hi,

 

It will be bug on &.2 but we are facing this issue on CentOS 6.8.

In 6.8 also has this issue?

 

Please suggest.

 

Regards,

Shagun

 

Message: 2

Date: Thu, 21 Jun 2018 13:14:08 +0100

From: "peter.winterflood" <peter winterflood ossi co uk>

To: CentOS mailing list <centos centos org>, anax <anax ayni com>

Subject: Re: [CentOS] NetworkManager updating resolv.cfg

Message-ID:

                <16422442280 27db 2b6837a33dad96cb17d193f32630f285 ossi co uk>

Content-Type: text/plain; format=flowed; charset="us-ascii"

 

On 21 June 2018 12:13:02 "anax" <anax ayni com> wrote:

 

> Hi Shagun

> check your settings of PEERDNS and IPV6_PEERDNS...

> 

> suomi

> 

> On 06/21/2018 08:33 AM, Maheshwari, Shagun wrote:

>> Hi,

>> 

>> I am facing issue stoping NetworkManager to update resolv.cfg, I am

>> using below configuration for eth0 interface:

>> 

>> TYPE=Ethernet

>> BOOTPROTO=dhcp

>> DEFROUTE=yes

>> IPV4_FAILURE_FATAL=no

>> IPV6INIT=yes

>> IPV6_AUTOCONF=yes

>> IPV6_DEFROUTE=yes

>> IPV6_FAILURE_FATAL=no

>> IPV6_ADDR_GEN_MODE=stable-privacy

>> NAME=eth0

>> UUID=93b90a46-dab5-4a67-8fd0-fefe8874a8b9

>> DEVICE=eth0

>> _ONBOOT_=no

>> PEERDNS=no

>> PEERROUTES=yes

>> IPV6_PEERDNS=yes

>> IPV6_PEERROUTES=yes

>> DNS1=<ipv4 address>

>> DNS2=<ipv6 address>

>> 

>> 

>> Also, added dns=none in NetworkManager.conf file.

>> 

>> Whenever I am restarting NetworkManager, resolv.cfg gets updated and

>> only

>> ipv4 nameserver is displaced, whether I am expecting both the ips

>> (ipv6 and

>> ipv4 address to be present in resolv.cfg file.

>> 

>> Any suggestion here, how to achieve that??

>> 

 

 

Regards,

Vyshnav