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pespin has posted comments on this change. ( https://gerrit.osmocom.org/c/libgtpnl/+/35985?usp=email )

Change subject: gtp-link: add IPv6 support ......................................................................

Patch Set 1:

(1 comment)

Commit Message:

https://gerrit.osmocom.org/c/libgtpnl/+/35985/comment/d04ef330_51b701cd PS1, Line 15: ./gtp-link add gtp0 ip6 --sgsn # IPv6 SGSN

Dual stack is support for both inner MS IP address and outer GTP IP address. […]

@pablo@gnumonks.org, regarding "2) dual stack outer GTP address", you are mentioning there how to configure the *remote* outer address. However, I'm talking about the *local* (bind) outer address, that is, where the peer will send traffic to us through UDP/GTP-u. Those are so far configured by gtp-link binary, and hardcoded to ANY_ADDRESS.

What If I want to, lets say bind to IPv4 address A.B.C.D and IPV6 address ::Z, and then announce those in CreateSessionReq/Resp in GTPv{1,2}C? AFAIU I need to create 2 gtp tun devices, binding one to A.B.C.D and one to ::Z.