Point to Point interface over qmi_wwan device

[Tang Nguyen]

Hi,
I am working on the feature of setting a netmask of /32 for  wwan network interface.  Usually, dhclient would get a /29 netmask  from mini dhcpserver in modem.  The wwanX ethernet-line interface and /29 netmask has affected to OSPF network design over LTE modem.  We need to have a Point-to-Point interface and /32 netmask on wwan to solve this problem. 
I can open a PPP pver serial ttyUSB serial oport, but doing that we loose the AT command port and too much PPP overhead. 
Can we have anyway to force wwanX to have  /32 netmask  over libqmi - I intend to use "ip or ifconfig" command to change netmask of wwan, but not sure it is the right way or not.  
Thanks
Tang
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