bootstrap.sh no longer needs the provisioning network: it installs and starts the region on the management address; --iface later models the subnet, serves DHCP and moves server_url. rollcall net discover shows what each interface sees (LLDP, DHCP servers via a parallel probe, neighbours) and suggests the next step. commission_append follows server_url. Doctor treats a host that serves no DHCP yet as day 0. Fixes found on a clean VM: os-release clobbered the rack name, install.sh not executable, slow DHCP offers missed. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>