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pablo has posted comments on this change. ( https://gerrit.osmocom.org/c/libgtpnl/+/35987?usp=email )

Change subject: gtp: provide interface to set family ......................................................................

Patch Set 2:

(1 comment)

Commit Message:

https://gerrit.osmocom.org/c/libgtpnl/+/35987/comment/c66d4f48_89ff8d1b PS2, Line 9: Kernel now supports for TID/I_TEI to be used in both IPv4 and IPv6 GTP

IIUC you mean here that we now use different local TEI pools for IPv4 and IPv6 (which makes sense, s […]

Probably the kernel patch kernels to clarify this:

gtp: identify tunnel via GTP version + TEID + family

This allows to define a GTP tunnel for dual stack MS/UE with both IPv4 and IPv6 addresses while using the same TEID via two PDP context objects.

Still not complete description though.

You have to specify the gtp device too, so this:

[ GTP device, GTP version, TID/I_TEID, family ]

there is a 1:1 mapping between the local listener address and the GTP device. And a GTP can only listen to one single address at the same time, either IPv4 or IPv6.