On 27 Jan 2024, at 14:19, Strahil Nikolov via users
<users(a)lists.fedoraproject.org> wrote:
Hi all,
I am looking for some help to adjust systemd-resolved to still use DHCP (ip, gateway and
dns servers) but to avoid using the dns search provided over DHCP.
The reason behind is that OKD4's coredns (Fedora CoreOS) appends the search stanza
(first entry) that is taken from the host and then sends it to the upstream server.
Ex:
/etc/resolv.conf contains:
search my.domain my.other.domain
CoreDNS query becomes 'quay.io.my.domain' instead of 'quay.io'.
P.S.: I have an ugly workaround where I unlink and create /etc/resolve.conf but that
can't be the only solution.
If you are using NetworkManager then I think you want to set the connection
to "Automatic (addresses only)" then set DNS options manually.
I think that is the nmcli property ipv4.ignore-auto-dns.
If you are using systemd-resolved then you can settings in your
/etc/systemd/network/XXX.newtwork file to ignore settings from DHCP as well
according to the man systemd.network page, See DNS= and Domains=.
Barry
Best Regards,
Strahil Nikolov
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