net.slot_range required operators to reason about IPv4 last-octet slots to
control the host's reserved port span. Replace it with net.user_ports, a
direct comma-separated set of user-port ranges (default 10000-29999) that a
new container's whole-hundred block is drawn from, auto-aligned to whole
hundreds and merged. Only-new-users effect; existing containers keep their
ports.
- cfg: ParseUserPorts/CanonicalUserPorts/UserPortRanges/UserPortCount/
UserPortBlockStarts; legacy slot_range is migrated once on Load and the
old key stays in the file, ignored, no longer editable.
- db: migration v13 adds a UNIQUE index on users.start_port (port blocks are
no longer derived from idx, so uniqueness must be enforced directly);
UsedStartPorts() feeds the allocator.
- mgr: port blocks are allocated independently of the IPv4 idx via
allocUserPortBlock; admin capacity readout follows UserPortCount.
- installer: 00-ip-ask.sh asks for port ranges (default = no confirm, a
changed value echoes capacity and asks Y/n) and converts legacy slot_range;
00-check.sh scans only the effective user-port ranges.
- ssh: allocSSHPort now probes the host (bind test) before picking a port,
reassigning on conflict; the install no longer hard-fails on an occupied
30000-31999 port.