Ethernet PDU error code 3331

Hello,

I am working with RM500U-CN modem to establish Ethernet

A+CGDCONT=1,“Ethernet”,“eth”

AT+QCFG=“5GLAN”,1,1

AT+QNETDEVCTL=1,1,1

AT+QNETDEVSTATUS=1

+QNETDEVSTATUS: 1,0,“IPV4”,3331

why the status returns as IPV4 while i am trying to establish Ethernet PDU? Could you help?

Thanks.

Dear @user6
Did your network support 5G LAN?
3331 is timeout.