# NousResearch/hermes-agent · IPv6/IPv4 race fix for slow cold starts

## Open now

- Nothing open on GitHub.

These items address a startup performance problem where a dead IPv6 route causes the TUI cold start to stall for minutes. The fix applies Happy Eyeballs-style IPv6/IPv4 racing to sync connections across all startup paths, not just Codex.

## TL;DR

- 3 member(s): 0 open issue(s), 1 closed issue(s), 0 open PR(s), 1 merged PR(s), 1 PR(s) closed without merging.
- A fix was merged to main in PR #114836. Verify it addresses your case.
- **Recommended:** read PR #114836 (and any competing PRs below) before filing. Confirm the merged change covers your symptom.

## Maintainer resolution verdict

- Internal-tracker verdict over this cluster's issue members: `resolved` · deciding PR(s): `pr-114836`. This is distinct from the fix status above. Weigh it yourself.

## How this cluster was grouped

- Link evidence (`STRUCTURAL_SPANNING`): every member is connected by structural evidence: shared changed files, or a closing/superseded reference.
- Pairwise link density `0.67`: the share of member pairs that carry a link, counting a structural link in full and a relevance-only link at 0.36. `1.00` means every pair is linked.

## Closed / duplicate issues

- #114265: Startup path (model catalog, MCP handshakes, provider warm) has no Happy Eyeballs: dead IPv6 route makes TUI cold start take minutes

## Prior & competing PRs

- **#114836: fix(bootstrap): cold start no longer stalls on a dead IPv6 route — every sync connect races IPv6/IPv4 (#114265, salvage #114277)**. merged to main · fix tier `verified`
  - maintainer direction: category `merged`
  - files: `agent/process_bootstrap.py`, `gateway/platforms/yuanbao.py`, `gateway/relay/ws_transport.py`, `hermes_bootstrap.py`, `hermes_cli/doctor_connectivity.py`, `plugins/platforms/buzz/adapter.py`, `tests/agent/test_codex_happy_eyeballs.py`, `tests/gateway/test_ws_dial_happy_eyeballs.py`, `tests/hermes_cli/test_doctor_ipv6_probe.py`, `tests/plugins/platforms/buzz/test_buzz_ws_dial_happy_eyeballs.py`, `tests/test_hermes_bootstrap.py`, `website/docs/reference/cli-commands.md`, `website/docs/user-guide/configuration.md`
- **#114277: fix(agent): race IPv6/IPv4 on every startup-path sync connect, not just Codex**. closed without merge
  - maintainer direction: category `merged_via`; implication `superseded`; refs `72360ae1d238`, `#114836`, `#114265`, `#114277`

## Fix status

- Merged to main in PR #114836 (cited above). No release data is tracked. Verify downstream.
- Fix last verified (merged) `2026-09-18`.