Starlink's USB ethernet shares a hub with the rtw89 Wi-Fi adapter; when Starlink flaps, the hub re-enumerates and tears the radio down, so hostapd loses its interface and exits. Two stock defaults left the AP dark: Restart=on-failure misses clean exits, and the 5-in-10s start limit makes systemd give up during a re-enumeration storm. - hostapd-restart.conf drop-in: Restart=always, RestartSec=5, StartLimitIntervalSec=0 so hostapd retries forever until the interface returns (verified: SIGKILL -> back to state=ENABLED in ~7s). - van-ap-watchdog daemon: backstop for the case systemd can't see (hostapd running but radio wedged). Polls hostapd_cli status; restarts hostapd if the iface is present but not ENABLED, waits it out if the iface is mid-re-enumeration. - hostapd.conf: add ctrl_interface so the watchdog can read the real AP state. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
14 lines
273 B
Desktop File
14 lines
273 B
Desktop File
[Unit]
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Description=VanLink AP watchdog — recover hostapd if the radio wedges after a USB glitch
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After=hostapd.service
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Wants=hostapd.service
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[Service]
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Type=simple
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ExecStart=/usr/local/sbin/van-ap-watchdog
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Restart=always
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RestartSec=5
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[Install]
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WantedBy=multi-user.target
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