[CentOS] Network Manager / CentOS 7 / local unbound

Tue Apr 11 09:21:35 UTC 2017
anax <anax at ayni.com>

Hi Alice
man NetworkManager.conf

in /etc/NetworkManager/NetworkManager.conf



On 04/11/2017 10:40 AM, Alice Wonder wrote:
> Hello list -
> http://unix.stackexchange.com/questions/90035/how-to-set-dns-resolver-in-fedora-using-network-manager
> That says it works for CentOS 5 and I *suspect* the methods there (3
> listed) would work, but what is the best way with NetworkManager to set
> it up to use the localhost for DNS ?
> I'm paranoid about DNS spoofing and really prefer to have a local
> instance of DNSSEC enforcing unbound running on my CentOS 7 virtual
> machines (e.g. linode)
> Currently I just use a cron job that runs once a minute to over-write
> was it is /etc/resolv.conf so they don't use the DHCP assigned
> nameservers, but that does leave a short window every time the network
> is restarted.
> I'd like to know the proper way to set up Network Manager to just create
> nameserver
> nameserver ::1
> in /etc/resolv.conf
> Via google, it seems every distro approaches it differently and most
> instructions I have seen involve a GUI.
> I did not see how to do it in the CentOS documentation but it might be
> there and I just did not figure out how to search it for what I wanted.
> Those stackexchange methods look like they might work but they reference
> CentOS 5 and I know some NetworkManager stuff changed even just between
> 7.2 and 7.3 as I experienced incorrect IPv6 address after update as a
> result of those changes.
> Is there an "official" way to tell NetworkManager what I want in
> /etc/resolv.conf ? Or better yet, a way to just tell it to leave that
> file alone?
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