3G on Carbon X1 with Kubuntu 13.10

IP configuration on the wwan0 interface failed on my Lenovo Carbon X1 with Kubuntu 13.10 (3.11.0-15-generic). The problem seemed to be a due to a kernel change;


I followed the proposal made at the end of the bug report; add
options cdc_ncm prefer_mbim=N
and reboot.

That solved the problem!

And while I was at it, I also added

No reason to have avahi running on an interface towards the Internet.

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