1 files changed, 7 insertions, 2 deletions

diff --git a/plugins/check_ntp.c b/plugins/check_ntp.c
index 76d19ba..16be7c5 100644
--- a/plugins/check_ntp.c
+++ b/plugins/check_ntp.c
@@ -398,7 +398,11 @@ double offset_request(const char *host, int *status){
                         die(STATE_UNKNOWN, "can not create new socket");
                 }
                 if(connect(socklist[i], ai_tmp->ai_addr, ai_tmp->ai_addrlen)){
-                        die(STATE_UNKNOWN, "can't create socket connection");
+                        /* don't die here, because it is enough if there is one server
+                           answering in time. This also would break for dual ipv4/6 stacked
+                           ntp servers when the client only supports on of them.
+                         */
+                        DBG(printf("can't create socket connection on peer %i: %s\n", i, strerror(errno)));
                 } else {
                         ufds[i].fd=socklist[i];
                         ufds[i].events=POLLIN;
@@ -845,6 +849,7 @@ void print_help(void){
         printf (UT_HELP_VRSN);
         printf (UT_EXTRA_OPTS);
         printf (UT_HOST_PORT, 'p', "123");
+        printf (UT_IPv46);
         printf (" %s\n", "-w, --warning=THRESHOLD");
         printf ("    %s\n", _("Offset to result in warning status (seconds)"));
         printf (" %s\n", "-c, --critical=THRESHOLD");
@@ -881,5 +886,5 @@ print_usage(void)
         printf ("%s\n", _("WARNING: check_ntp is deprecated. Please use check_ntp_peer or"));
         printf ("%s\n\n", _("check_ntp_time instead."));
         printf ("%s\n", _("Usage:"));
-        printf(" %s -H <host> [-w <warn>] [-c <crit>] [-j <warn>] [-k <crit>] [-v verbose]\n", progname);
+        printf(" %s -H <host> [-w <warn>] [-c <crit>] [-j <warn>] [-k <crit>] [-4|-6] [-v verbose]\n", progname);
 }