Mbim device umb0 - no authentification?

[Kapfhammer, Stefan]

Hello misc,
hello developers,

‎first of all thank you for the stunning release
of OpenBSD 6.0.
Well, so much improvements. WOW!

I have a builtin UMTS card Ericsson H5321gw.
Until 5.9 I used pppd(1) together with chat(1)
to connect to my mobile provider. Devices
/dev/cuaU0 - /dev/cuaU2

To my surprise I could see today, that this
card is registered as MBIM device umb0.
I created a hostname.umb0 file in /etc
with:

apn internet.telekom
pin 0000

after 'ifconfig umb0 up'

the blue light at the frontpanel, indicating
UMTS connection, turned on.

'ifconfig umb0' showed up the correct apn,
‎the entered pin as valid, 2 provider given dns servers
as well as a remote and a local ip address.

What I have to give‎, but still missing in the manpage
is the username telekom, the password telekom
and the authentication protocol pap.

Is this work-in-progress and I missed some reading
or what did I wrong? With Telekom DE no packets pass
without authentication.

Have you any advice for me?

Freundliche Grüße / Regards
-stefan kapfhammer