On Mon 21 Mar 2022 at 06:05:48 (+0000), Tim Woodall wrote: > On Sun, 20 Mar 2022, David Wright wrote: > > On Sat 19 Mar 2022 at 03:14:54 (+0100), Stella Ashburne wrote: > > > > > > There are instances in which my machine is connected to a mobile hotspot. > > > And in some situations, it's connected to a smartphone via USB tethering. > > > And when I'm in the office, I may connect it to a LAN cable. > > > > > > Below are the contents of my /etc/network/interfaces file: > > > > > > # This file describes the network interfaces available on your system > > > # and how to activate them. For more information, see interfaces(5). > > > > > > source /etc/network/interfaces.d/* > > > > I would change this line to > > > > source-directory /etc/network/interfaces.d > > > > (which was the default on new buster installations). > > > > I would then hive off all your interface configurations into > > separate files in the directory /etc/network/interfaces.d > > using all-ASCII filenames constructed from upper/lower-case > > letters, digits, underscores, and minus-hyphens, as specified > > on the man page, but with the string ".hidden" added to the end, > > thus: > > > > myphone-tethered.hidden > > office-wired.hidden > > wifi.hidden > > hotspot.hidden > > > > and so on. Files with a dot are ignored when included by means of > > a source-directory directive. > > I think just commenting out the allow-hotplug lines is sufficient. Then > you can use ifup/ifdown at will. The only 'problem' will be that an > interface doesn't start at boot.
And that would be a killer for a sizeable proportion of users. I don't run any true headless systems myself, but I usually start my non-laptops with wakeonlan, which would become futile along with all the other power management wakening options. > (I'd second splitting into separate files anyway) Cheers, David.
