Packets are not arrived at tunnel setup by libgtpnl

Harald Welte laforge at
Thu Nov 23 13:30:44 UTC 2017

hi Cong,

it would be very useful if you could give a description of what exactly
your are trying to achieve, using which particular versions of which software.

The kernel GTP module is known-working and has been verified with both
OpenGGSN and OsmoSGSN.  There are also other users such as OpenAirInterface
as well as (as far as I know) ergw.  It might be easiest to simply use
one of those programs to understnd how the kernel GTP-U driver is used.

Also, if you want us to be able to help you, please always include the detailed
copy+paste output of the related commands and tools, e.g. the exact gtp-link
and gtp-tunnel commands you have been using.

- Harald Welte <laforge at> 
"Privacy in residential applications is a desirable marketing option."
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