Configuring DRM to use a proxy via command line / Prefs are not updated. Invalid value err

Hi all,

Dell Repository Manager Version : v3.4.3

OS Version : Debian 11

I've recently setup my first DRM server to update some Dell servers. It is installed on a GUI-less Debian based host so I am using the drm command line to manage it.

I was unable to configure DRM to connect to the internet via the proxy so I temporarily allowed it direct unfiltered access to the internet to prove DRM would assist in keeping our Dell servers up to date. I now need to undo my temporary change and configure DRM to use a proxy, else it's useless in my use case.

I see by executing drm --help that there are some proxy related arguments which can be passed to set a proxy, but I've been unable to suss the syntax for them. Is someone able to assist me please?

drm --help
...
--set Set the proxy or plugin update.
...
-p,--proxy Use with --set to configure the proxy details.
...

I have tried the following syntax all with the same result "Preferences are not updated. Invalid value"

# drm --set --proxy=http://proxy.domain.local:3128

Preferences are not updated.
Invalid value

# drm --set --proxy="http://proxy.domain.local:3128"

Preferences are not updated.
Invalid value

# drm --set --proxy=proxy.domain.local:3128

Preferences are not updated.
Invalid value 

# drm --set --proxy="proxy.domain.local:3128"

Preferences are not updated.
Invalid value