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Thread: netcfg/do_not_use_netplan=true ignored at install time

  1. #1
    Join Date
    Jul 2012
    Beans
    9

    netcfg/do_not_use_netplan=true ignored at install time

    With people trying (and required) to work from home due to COVID-19, I need to set up a machine dedicated to an OpenVPN bridge (external Windows clients bridged to a simple Windows workgroup -- no WINS or domain controllers) for our very small office. Unfortunately, it appears that any documentation I find has just been relabeled as being for Ubuntu 18.04, because it ALL uses /etc/network/interfaces to set things up. I finally found this:
    At install time, a user can opt to use ifupdown by preseeding netcfg/do_not_use_netplan=true. This is done by adding the preseed line to the command line when booting the installation media (i.e. at install media boot menu, press F6, type ‘e’, and add to the command line).
    In https://netplan.io/faq#how-to-go-back-to-ifupdown but I have been unable to get the installer for 18.04.4 to recognize (or obey?) the setting. I am seeing many comments about netplan not working well (or at all?) with bridging set ups, plus I have yet to encounter even ONE OpenVPN document for 18.04 that uses netplan files, and I am not nearly expert enough (or at all, really) to completely roll my own set up.

    I have also read that there are quite a few issues and very tricky bits to trying to remove netplan and roll back to the older network/interfaces system, so if I cannot get the installer to respect the setting to install the old system, it would seem that I must find a 16.04 install just to do what I need.

    Please tell me there is a better way.

  2. #2
    Join Date
    May 2007
    Beans
    214
    Distro
    Xubuntu

    Re: netcfg/do_not_use_netplan=true ignored at install time

    You can always make the adjustment after installation (as long as you have functioning network and internet). But that might require to run without VPN initially. A bit down in this thread there's a more complete answer:

    https://askubuntu.com/questions/9772...isable-netplan

    PS: I'm running updated 18.04 without Netplan using "interfaces" old style.
    Any follow-up information on your issue would be appreciated. Please have the courtesy to report back.

  3. #3
    Join Date
    Jul 2012
    Beans
    9

    Re: netcfg/do_not_use_netplan=true ignored at install time

    Thanks for the link to those instructions. Unfortunately, I do no trust myself to complete that much work without messing it up in the cramped location where the server physically exists and I'm pretty sure it would be a bad idea to attempt these changes over an SSH connection. So I have installed 16.04. By the way, I got a note from the OpenVPN folks when I complained that all of their supposedly 18.04 documentation is just rebranded 16.04 documentation that doesn't refer to netplan and their response was simply, "We do not support netplan here."

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