**描述问题** sierra的em7455的模块，在modem_support.json中参照mc7354信息，添加后可以正常认出模组，但拨号后网络接口无法正常获取IP，请大佬看下原因 <img width="1250" height="441" alt="Image" src="https://github.com/user-attachments/assets/2f51e6ae-1750-45cd-bb85-c538139cdf9d" /> <img width="1554" height="824" alt="Image" src="https://github.com/user-attachments/assets/2406efb6-274b-4445-a27d-b45cfe7cd4ee" /> <img width="1608" height="364" alt="Image" src="https://github.com/user-attachments/assets/0882ae70-ef44-4ec2-bf6f-956e7720a5a6" /> <img width="805" height="136" alt="Image" src="https://github.com/user-attachments/assets/07efc013-2dd5-45c3-8c68-250e9fe400a5" /> <img width="477" height="316" alt="Image" src="https://github.com/user-attachments/assets/fa77298e-9508-45e2-b226-6aa94c8da117" />
描述问题
sierra的em7455的模块，在modem_support.json中参照mc7354信息，添加后可以正常认出模组，但拨号后网络接口无法正常获取IP，请大佬看下原因