* L2TP APIs: see .../src/vnet/l2tp/{l2tp.api, l2tp_api.c}
* BFD APIs: see .../src/vnet/bfd/{bfd.api, bfd_api.c}
* IPSEC APIs: see .../src/vnet/ipsec/{ipsec.api, ipsec_api.c}
- * IPSEC-GRE APIs: see .../src/vnet/ipsec-gre/{ipsec_gre.api, ipsec_gre_api.c}
* LISP APIs: see .../src/vnet/lisp/{lisp.api, lisp_api.c}
* LISP-GPE APIs: see .../src/vnet/lisp-gpe/{lisp_gpe.api, lisp_gpe_api.c}
* SESSION APIs: .../vnet/session/{session.api session_api.c}