Huawei/Vodafone K5160 in MBIM-mode, problems with dualstack

[Thomas Schäfer]

Hi,

the good news first. The modem works under linux in both modes (cdc_ether and 
mbim).

cdc-ether-mode works well in dualstack too without special treatment.

I have some problem with dualstack in mbim-mode.
Using just the Networkmanager it only uses ipv4. If I use the ModemMananger 
manually with dhclient(and slaac) afterwards, I get dualstack working. 

But the ModemManager doesn't know about it:

mmcli -b 3                                                                                                                                           
Bearer '/org/freedesktop/ModemManager1/Bearer/3'
  -------------------------
  Status             |   connected: 'yes'
                     |   suspended: 'no'
                     |   interface: 'wwan0'
                     |  IP timeout: '20'
  -------------------------
  Properties         |         apn: 'internet.telekom'
                     |     roaming: 'allowed'
                     |     IP type: 'ipv4v6'
                     |        user: 'none'
                     |    password: 'none'
                     |      number: 'none'
                     | Rm protocol: 'unknown'
  -------------------------
  IPv4 configuration |   method: 'static'
                     |  address: '10.24.226.116'
                     |   prefix: '29'
                     |  gateway: '10.24.226.113'
                     |      DNS: '10.74.210.210', '10.74.210.211'
                     |      MTU: '1500'
  -------------------------
  IPv6 configuration |   method: 'unknown'
  -------------------------
  Stats              |          Duration: '539'
                     |    Bytes received: 'N/A'
                     | Bytes transmitted: 'N/A'



On the other hand, when using an older mbim-modem (K5150) it works. I tested 
with master of libmbim and master modemmanager.

Any ideas where I should continue to search?

Special settings with mbimcli? 


Regards,
Thomas