Stability
- Fibocom interface no longer stays dead after late AT port
- PDP fallback remembered; priority switch keeps the session
- Saved bands re-checked after modem re-enumeration
- Interface recreate keeps PAP/CHAP login and DNS
- New uplinks get a free metric; duplicate metrics fixed
- Priority metric restored after reconnect with watchdog off
- mbimp: no restart loop on roaming refusal or empty APN
- qmiraw: no leaked QMI clients when IPv6 fails
- Metrics poll never talks during a dial
- AT port lock leaks fixed
- Two-modem Compal/SDX55: metrics read the right modem
Watchdog
- Healing continues when another link is gone
- Healing targets the modem's current USB path and port
- Flapping modem respects the attempt limit
- SIM absence detection no longer misreads other errors
- GPIO power cycle never leaves a modem switched off
- ModemManager not restarted by every modem reset
Modems
- Fibocom FG621-EA / FM650-CN metrics and bands
- Quectel EG060W, BG95/BG96, EC200U, EC200T bands, EG120K-EA
- Qualcomm 9207 (Alcatel HH40V/HH41V), MeiG Qualcomm line
- 100+ sibling, OEM and PCIe IDs of supported modems
- EP06-A and EP06-E bands chosen by firmware revision
- EM12-G band write fixed; EM12/EM160 SIM slots
- IPv6 TTL rule keeps ICMPv6 working