I know this is the wrong way to do it, but d-i pkgsel/run_tasksel boolean false in my preseed.cfg was the easiest way for me to fix it. Just the d-i netcfg/choose_interface select auto problem to go now. This is possibly the wrong thread for it, IMO there needs to be a simple way to copy the SSH key/s provided by d-i network-console/authorized_keys_url to any/all created user accounts during installation, especially if I have d-i passwd/root-login boolean false set.