+static clib_error_t *
+ikev2_resolve_responder_hostname (vlib_main_t *vm, ikev2_responder_t *r)
+{
+ ikev2_main_t *km = &ikev2_main;
+ dns_cache_entry_t *ep = 0;
+ dns_pending_request_t _t0, *t0 = &_t0;
+ dns_resolve_name_t _rn, *rn = &_rn;
+ u8 *name;
+ int rv;
+
+ if (!km->dns_resolve_name)
+ return clib_error_return (0, "cannot load symbols from dns plugin");
+
+ t0->request_type = DNS_API_PENDING_NAME_TO_IP;
+ /* VPP main curse: IKEv2 uses only non-NULL terminated vectors internally
+ * whereas DNS resolver expects a NULL-terminated C-string */
+ name = vec_dup (r->hostname);
+ vec_terminate_c_string (name);
+ rv = km->dns_resolve_name (name, &ep, t0, rn);
+ vec_free (name);
+ if (rv < 0)
+ return clib_error_return (0, "dns lookup failure");
+
+ if (ep == 0)
+ return 0;
+
+ ip_address_copy (&r->addr, &rn->address);
+ r->is_resolved = 1;
+ return 0;
+}
+