package: installer debian-10.7.0-i386-netinst.iso
This installation was attempted on an old x86 laptop, for which the native wifi is non-functional without "non free" drivers. I worked around the wifi problem by using a usb wifi dongle, which configures and works correctly for the first part of the installation. However, at the point where "choose a mirror" is supposed to happen, all mirrors appear to be invalid. >From a shell, I determined that the network has lost its gateway and dns service. My guess is that some network reset operation has happened, as part of the normal installation process, and in the process the nonfunctional native network hardware was selected instead of the usb network. in any case, from this point it's possible to continue and finish with a very minimal command line installation with no network.