How to add option to /etc/resolv.conf under systemd?

[Chris Green]

On Thu, Feb 27, 2020 at 04:39:18PM -0600, Wynona Stacy Lockwood wrote:
>    On Thu, Feb 27, 2020 at 4:07 PM Chris Green <[1]cl at isbd.net> wrote:
> 
>      I want to add the option "options single-request" to my
>      /etc/resolv.conf file.  As this file is actually a symlink to a file
>      created dynamically by systemd at startup it isn't immediately
>      obvious
>      how to do this.
>      So, that's the question, how does one add options to
>      /etc/resolv.conf
>      under systemd?
>      --
>      Chris Green
> 
> 
>    Hi Chris! (And list)
>    Do you have resolvconf installed? If so, you can simply edit the head
>    file, which you should find at /etc/resolvconf/resolv.conf.d/head which
>    you can edit with sudo nano.
>    If you don't have it installed, and wish to use it to help with this,
>    do the following:
>    sudo apt update
>    sudo apt install resolvconf
>    sudo systemctl status resolvconf.service
>    If it's not already running for some reason, do the following:
>    sudo systemctl start resolvconf.service
>    sudo systemctl enable resolvconf.service
>    sudo systemctl status resolvconf.service
>    If that works as expected, you then just do:
>    sudo nano /etc/resolvconf/resolv.conf.d/head
>    and add what you want to the file. Save your changes, and then:
>    sudo systemctl start resolvconf.service
>    At this point, you should basically be done.
>    NEAT find on options single-request! I hadn't seen that before, but it
>    makes a lot of sense, and I'm now using it as well!
> 
Doing that seems to stop the systemd defaults from
/usr/lib/systemd/resolv.conf from getting installed, is that supposed
to happen?

-- 
Chris Green