---
model: gpt-5.6-sol
service: opencode
session: tractor-addr-unpacking
timestamp: 2026-08-25T19:05:29Z
git_ref: e1007547
scope: code
substantive: true
raw_file: 20260825T190529Z_e1007547_prompt_io.raw.md
---

## Prompt

After committing the attach-only network namespace lifecycle, the
human authorized the next incremental Layer C change.

## Response summary

Added owned `open_netns()` creation and teardown through shielded
pyroute2 worker calls. The context pins identity through
`attach_netns()`, yields an owned handle, closes its FD before removal
and cleans up despite caller cancellation.

## Files changed

- `tractor/discovery/_bindspace.py` - owned netns lifecycle.
- `tractor/discovery/__init__.py` - public lifecycle export.
- `tests/discovery/test_bindspace.py` - ownership, ordering,
  cancellation and name requirements.
- `ai/tpt-backends/03_wg_tunnel_bindspace.md` - owned lifecycle and
  spawn-boundary contract.

## Human edits

The human selected owned network namespace creation as the next
incremental Layer C change. The agent implemented the source changes;
no direct manual edits or follow-up corrections were observed.