openwrt lte network

network

config interface wan         
        option ifname  ppp0                    
        option device  /dev/ttyUSB1   
        option apn     '3gnet'        
        option service umts  
        option proto   3g    
        option 'pppd_options' 'debug noipdefault'
        option username '3g'        
        option password '3g'        
        option peerdns 0              
        option dns '8.8.8.8 8.8.4.4'
        option ipv6 '0'            
                                   
config interface 'wwan'       
        option proto 'qmi'          
        option device '/dev/cdc-wdm0'            
        option ifname 'wwan0'                    
        option apn 'myapn'  
        option peerdns '0'         
        option ipv6 '0'             
        option metric '20'          
        list dns '208.67.222.222'
        list dns '208.67.220.220