Bug 248715

Summary:	dhclient: prepend domain-name-servers in dhclient.conf 'replaces' dhcpd provided value
Product:	Base System	Reporter:	Dmitry Afanasiev <KOT>
Component:	conf	Assignee:	freebsd-bugs (Nobody) <bugs>
Status:	Closed Not A Bug
Severity:	Affects Some People	CC:	roy
Priority:	---	Keywords:	needs-patch, needs-qa
Version:	12.1-STABLE	Flags:	koobs: mfc-stable12? koobs: mfc-stable11?
Hardware:	Any
OS:	Any

Description Dmitry Afanasiev 2020-08-18 06:38:14 UTC

I'm want to use local dnsmasq. I added this line to dhclient.conf:
prepend domain-name-servers 127.0.0.1;

But got in resolv.conf *ONLY* "127.0.0.1", and no NS from dhclient.

This problem exists starting from FreeBSD-10, on some older release this options was worked properly.

Comment 1 Kubilay Kocak freebsd_committer

2020-08-18 11:27:22 UTC

I was meant to report this a short while ago on CURRENT:

https://twitter.com/koobs/status/1284414758301470720

I think the append/prepend issue affects more than just 'domain-name-server' as well.

Comment 2 Dmitry Afanasiev 2020-08-24 12:58:07 UTC

I'm not checked all prepend options, but option "prepend domain-name" works propely.

Comment 3 roy 2021-02-01 23:57:06 UTC

FreeBSD uses openresolv.
If openresolv sees 127.0.0.1 then it assumes that the local resolver is configured correctly.

You should see your DHCP provided nameservers still with
`resolvconf -l`

You can change the default by adding this to /etc/resovlconf.conf
resolv_conf_local_only=NO

Comment 4 Dmitry Afanasiev 2021-12-19 15:42:19 UTC

Okey, use resolvconf.conf to prepend nameservers + resolv_conf_local_only="NO" is a good solution.
Thanks You!