iBasis IPv6

[rxtx]

With KPN and Deutsche Telekom LTE-M SIMs we get dual-stack APN with both IPv4 and IPv6 IPs.

But the iBasis LTE-M SIM is giving out only IPv4, ignoring any previous +CGDCONT settings:

AT+CGDCONT=0,"IPV4V6","ibasis.iot"
OK
AT+CFUN=1
OK
AT+CGDCONT?
+CGDCONT: 0,"IP","IBASIS.IOT","10.160.64.94",0,0

Is there any way to get IPv6 with iBasis?

[helsing]

You may use AT+CNEC=24 to see all reject causes. Here is a list of causes: https://telecompedia.net/lte-release-causes/

Cause #50 – PDN type IPv4 only allowed

This ESM cause is used by the network to indicate that only PDN type IPv4 is allowed for the requested PDN connectivity.

You could try selecting IPV4V6 to slot '1'.

[rxtx]

Yes I'm getting +CNEC_ESM: 50,0 when requesting IPV4V6 and for IPV6-only getting +CNEC_EMM: 11 and +CNEC_EMM: 14 and no attachment at all.

Slot '1' similarly gives +CNEC_ESM: 50,1.

AT+CGDCONT=0,"IPV4V6","ibasis.iot"
OK
AT+CFUN=1
OK
AT+CNEC=24
OK
+CNEC_ESM: 50,0
AT+CGDCONT?
+CGDCONT: 0,"IP","ibasis.iot","10.160.108.169",0,0
OK
AT+CGDCONT=1,"IPV6","ibasis.iot"
OK
AT+CGACT=1,1
+CME ERROR: 133
+CNEC_ESM: 50,1
+CGEV: RESTR 3,1
AT+CGDCONT?
+CGDCONT: 0,"IP","ibasis.iot","10.160.108.169",0,0
+CGDCONT: 1,"IPV6","ibasis.iot","",0,0
OK
AT+CGDCONT=1,"IPV4V6","ibasis.iot"
OK
AT+CGACT=1,1
OK
+CGEV: ME PDN ACT 1,0
AT+CGDCONT?
+CGDCONT: 0,"IP","ibasis.iot","10.160.108.169",0,0
+CGDCONT: 1,"IP","ibasis.iot","10.160.108.169",0,0
OK

[helsing]

Hi Rustam,

Yes, this shows only IPv4 is supported.

Best regards,

Håkon