MC7304 + Get current settings + manual IP settings

Aleksander Morgado aleksander at
Sun Jun 5 16:33:02 UTC 2016


I've been playing today with --wds-get-current-settings, trying to
manually setup the WWAN without using DHCP, and failed miserably, not
sure why.

Once I get the device in 802-3 LLP, connected via WDS Start Network,
and then get the current settings, I basically just do:

$ sudo ip link set dev wwan1 up
$ sudo ip -4 addr add dev wwan1
$ sudo ip link set dev mtu 1430
$ sudo ip route add default via dev wwan1

And try to ping...
$ ping -I wwan1

It won't work at all.

But, if I just run dhclient on the interface, which ends up setting
the same setup, it ends up working...

$ dhclient wwan1

$ ping -I wwan1
PING ( 56 data bytes
64 bytes from seq=0 ttl=52 time=1808.345 ms
64 bytes from seq=1 ttl=52 time=809.933 ms
64 bytes from seq=2 ttl=52 time=68.077 ms

Interestingly, if I explicit tell ModemManager to request static IP
settings to NetworkManager, I do get connected (I assume without DHCP

Any idea? What am I missing? Why does DHCP actually work here and not
manual IP settings?


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