https://bugs.ntp.org/show_bug.cgi?id=2646
https://bugs.gentoo.org/533966

--- a/ntpd/ntpd.c
+++ b/ntpd/ntpd.c
@@ -1299,10 +1299,10 @@
 			 */
 			cap_t caps;
 			char *captext;
-			
+
 			captext = (scan_addrs_once)
-				    ? "cap_sys_time=pe"
-				    : "cap_sys_time,cap_net_bind_service=pe";
+				    ? "cap_ipc_lock,cap_sys_time=pe"
+				    : "cap_ipc_lock,cap_sys_time,cap_net_bind_service=pe";
 			caps = cap_from_text(captext);
 			if (!caps) {
 				msyslog(LOG_ERR,