Dec 29 20:47:18 xxx dhclient: DHCPDISCOVER on wwan0 to 255.255.255.255 port 67 interval 6
Dec 29 20:47:24 xxx dhclient: DHCPDISCOVER on wwan0 to 255.255.255.255 port 67 interval 12
Dec 29 20:47:36 xxx dhclient: DHCPDISCOVER on wwan0 to 255.255.255.255 port 67 interval 16
Dec 29 20:47:52 xxx dhclient: DHCPDISCOVER on wwan0 to 255.255.255.255 port 67 interval 12
Dec 29 20:48:04 xxx dhclient: DHCPDISCOVER on wwan0 to 255.255.255.255 port 67 interval 9
Dec 29 20:48:13 xxx dhclient: DHCPDISCOVER on wwan0 to 255.255.255.255 port 67 interval 6
Dec 29 20:48:19 xxx dhclient: No DHCPOFFERS received.
Dec 29 20:48:19 xxx dhclient: No working leases in persistent database - sleeping.