docs: NetBird management DNS flap leaves daemon stuck (CT124 case)

Why: CT124 observed "Connecting" from iPhone for hours while
CT124 self-reported Connected. Root cause: DNS timeout ~7h earlier
broke management gRPC, daemon didn't auto-recover after DNS returned.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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2026-04-18 23:26:02 +08:00
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@@ -91,6 +91,7 @@ reopen fd 8: permission denied
| 加 subnet route 後部分裝置拿不到路由(`Networks: -``Status: Connecting` | 既有 NetBird daemon 不會自動重新套用 route卡在舊 state | 各裝置重連 daemonmacOS `launchctl kickstart`、iOS App Disconnect→Connect、Docker `compose restart`;見 [network-routes.md](./network-routes.md) |
| iPhone RTSP app 連不到 LAN 攝影機Safari 打 HTTP 可以) | 某些 iOS app 不走系統 VPN 路由 | 換支援 VPN 的 appVLC 等),或改用 NetBird FQDN |
| Dashboard 顯示 "SSH Access is disabled" 但 `ssh` 指令照通 | Dashboard 的 "SSH Access" 是 NetBird 內建 SSH 通道,不等於目標機器的 OpenSSH | 兩種 SSH 是不同東西,不用理會那個提示;見 [ssh-access.md](./ssh-access.md) |
| 某 peer 一直顯示 Connecting但其本機 status 看起來 Connected | DNS 短暫 timeout → daemon 的 management gRPC 連線卡死不自癒Signal 還 Connected但 Management Disconnected | 直接重啟 daemon / container可選加 watchdog見 [peer-deployment-ops.md](./peer-deployment-ops.md) |
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