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-rw-r--r--sysdeps/gnu/netinet/udp.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/sysdeps/gnu/netinet/udp.h b/sysdeps/gnu/netinet/udp.h
index bcc3213dc2..e3d4492c8a 100644
--- a/sysdeps/gnu/netinet/udp.h
+++ b/sysdeps/gnu/netinet/udp.h
@@ -87,6 +87,8 @@ struct udphdr
 #define UDP_ENCAP_ESPINUDP_NON_IKE 1	/* draft-ietf-ipsec-nat-t-ike-00/01 */
 #define UDP_ENCAP_ESPINUDP	2	/* draft-ietf-ipsec-udp-encaps-06 */
 #define UDP_ENCAP_L2TPINUDP	3	/* rfc2661 */
+#define UDP_ENCAP_GTP0		4	/* GSM TS 09.60 */
+#define UDP_ENCAP_GTP1U		5	/* 3GPP TS 29.060 */
 
 #define SOL_UDP            17      /* sockopt level for UDP */