Hi Matti,


..drivers/huaweimodem/gprs-context.c:huawei_gprs_activate_primary() cid 1
ofonod: Modem: > AT+CGDCONT=1,"IP","internet"\r
ofonod: Modem: < \r\nOK\r\n
..drivers/huaweimodem/gprs-context.c:at_cgdcont_cb() ok 1
ofonod: Modem: > AT^NDISDUP=1,1\r
ofonod: Modem: < \r\nOK\r\n

----> Activating NDIS interface seems to be okay

..drivers/huaweimodem/gprs-context.c:at_ndisdup_up_cb() ok 1
ofonod: Modem: > AT^DHCP?\r
ofonod: Modem: < \r\nOK\r\n

----> This is where we fail.  For some reason the firmware returns an 
empty result with an 'OK' here.  This is something the gprs-context 
driver isn't expecting.  See drivers/huaweimodem/gprs-context.c 
dhcp_query_cb():

         if (g_at_result_iter_next(&iter, "^DHCP:") == FALSE)
                 return;

Can you try activating the polling logic in this case as well.  E.g. by 
changing that chunk to read:

if (g_at_result_iter_next(&iter, "^DHCP:") == FALSE) {
	gcd->dhcp_source = g_timeout_add_seconds(1, dhcp_poll, gc);
	return;
}

Regards,
-Denis