Hi,

I want to write a node which gets all the GTP-u packets which enter
into VPP via an interface.

I understand from
https://docs.fd.io/vpp/17.07/clicmd_src_plugins_gtpu.html
that I have to run the following command for the interface --
set interface ip gtpu-bypass <interface>

In my code, kindly confirm, if the following is the right thing to do for v4 --
VNET_FEATURE_INIT (my_gtp_lookup4, static) = {
  .arc_name = "ip4-unicast",
  .node_name = "my-flow-gtp-lookup",
  .runs_before = VNET_FEATURES ("ip4-gtpu-bypass"),
};

Where  "my-flow-gtp-lookup" is the name of my node which has been
registered to obtain the GTP packets.

If I have to do something else, would appreciate the guidance.

Regards
-Prashant
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