IPv6 with simple-connect

[Martin Anderseck]

Hi all,

I'm using the Sierra Wireless MC7710 module with IPv4 and IPv6. When I 
want to setup an IPv4 connection I use
mmcli -m 0 --simple-connect="apn=myIPv4APN,ip-type=ipv4"
and it works fine.
However if I want to setup an IPv6 connection I'd normally use
mmcli -m 0 --simple-connect="apn=myIPv6APN,ip-type=ipv6"
This always leads to 
error: couldn't connect the modem: 
'GDBus.Error:org.freedesktop.libqmi.Error.Protocol.CallFailed: QMI 
protocol error (14): 'CallFailed''

If I have set the PDP context before using the AT commands
at+cgdcont=1,"IPV6","myIPv6APN"
then it works. This step is not necessary for IPv4 connections. 

If I have deleted all PDP contexts before starting the simple-connect 
command a new very general IPv4 entry is generated in both cases:
+CGDCONT: 1,"IP","","0.0.0.0",0,0

Is this a bug in ModemManager or do you think it's a firmware issue?

Best regards,
Martin
 
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