Hi all!
Just in case anyone here is intrerested, I'd like to point out that a recent patch series for IPv6 (and other feature) support of the Linux kernel GTP-U code has been posted to the linux-netdev list and is under review/discussion there: https://www.spinics.net/lists/netdev/msg455286.html
Please follow-up with any review comments there. Thanks!
osmocom-net-gprs@lists.osmocom.org