参考链接: https://openwrt.org/docs/guide-user/network/wan/wwan/ltedongle
在/etc/config/network下进行配置加上
config interface 'wan' option device '/dev/cdc-wdm0' option proto 'qmi' option ifname 'wwan0'
支持EC200T的做法:
https://blog.csdn.net/xiaokang_rays/article/details/111035803 , 在Openwrt180.06无需修改内核