I also confirm Bercik's finding from an previous e-mail (18 Jun 2017,
https://lists.debian.org/debian-s390/2017/06/msg00006.html) - Debian 9 IPL
stops when network interfaces configuration is coming up.
Last visible message is "Configure the network device".
Debian 8.9 with same Hercules configuration shows the expected network
Tested with: Debian 9.1 netinst
p.s. while using Debian 8.9, the SSH server for the installer fails to sent the
password prompt (ie. transport layer is working, but user authentication isn't)
- any ideas?