diff --git a/src/rspro/IpAddress.c b/src/rspro/IpAddress.c
new file mode 100644
index 0000000..4dfb46d
--- /dev/null
+++ b/src/rspro/IpAddress.c
@@ -0,0 +1,65 @@
+/*
+ * Generated by asn1c-0.9.28 (http://lionet.info/asn1c)
+ * From ASN.1 module "RSPRO"
+ * 	found in "../../asn1/RSPRO.asn"
+ */
+
+#include <osmocom/rspro/IpAddress.h>
+
+static asn_TYPE_member_t asn_MBR_IpAddress_1[] = {
+	{ ATF_NOFLAGS, 0, offsetof(struct IpAddress, choice.ipv4),
+		(ASN_TAG_CLASS_CONTEXT | (0 << 2)),
+		-1,	/* IMPLICIT tag at current level */
+		&asn_DEF_Ipv4Address,
+		0,	/* Defer constraints checking to the member type */
+		0,	/* PER is not compiled, use -gen-PER */
+		0,
+		"ipv4"
+		},
+	{ ATF_NOFLAGS, 0, offsetof(struct IpAddress, choice.ipv6),
+		(ASN_TAG_CLASS_CONTEXT | (1 << 2)),
+		-1,	/* IMPLICIT tag at current level */
+		&asn_DEF_Ipv6Address,
+		0,	/* Defer constraints checking to the member type */
+		0,	/* PER is not compiled, use -gen-PER */
+		0,
+		"ipv6"
+		},
+};
+static const asn_TYPE_tag2member_t asn_MAP_IpAddress_tag2el_1[] = {
+    { (ASN_TAG_CLASS_CONTEXT | (0 << 2)), 0, 0, 0 }, /* ipv4 */
+    { (ASN_TAG_CLASS_CONTEXT | (1 << 2)), 1, 0, 0 } /* ipv6 */
+};
+static asn_CHOICE_specifics_t asn_SPC_IpAddress_specs_1 = {
+	sizeof(struct IpAddress),
+	offsetof(struct IpAddress, _asn_ctx),
+	offsetof(struct IpAddress, present),
+	sizeof(((struct IpAddress *)0)->present),
+	asn_MAP_IpAddress_tag2el_1,
+	2,	/* Count of tags in the map */
+	0,
+	-1	/* Extensions start */
+};
+asn_TYPE_descriptor_t asn_DEF_IpAddress = {
+	"IpAddress",
+	"IpAddress",
+	CHOICE_free,
+	CHOICE_print,
+	CHOICE_constraint,
+	CHOICE_decode_ber,
+	CHOICE_encode_der,
+	CHOICE_decode_xer,
+	CHOICE_encode_xer,
+	0, 0,	/* No UPER support, use "-gen-PER" to enable */
+	0, 0,	/* No APER support, use "-gen-PER" to enable */
+	CHOICE_outmost_tag,
+	0,	/* No effective tags (pointer) */
+	0,	/* No effective tags (count) */
+	0,	/* No tags (pointer) */
+	0,	/* No tags (count) */
+	0,	/* No PER visible constraints */
+	asn_MBR_IpAddress_1,
+	2,	/* Elements count */
+	&asn_SPC_IpAddress_specs_1	/* Additional specs */
+};
+