1 files changed, 9 insertions, 1 deletions

diff --git a/plugins/check_ntp_peer.c b/plugins/check_ntp_peer.c
index d1b8b27b..806123b9 100644
--- a/plugins/check_ntp_peer.c
+++ b/plugins/check_ntp_peer.c
@@ -63,6 +63,7 @@ static short do_jitter=0;
 static char *jwarn="-1:5000";
 static char *jcrit="-1:10000";
 static int syncsource_found=0;
+static int li_alarm=0;
 
 int process_arguments (int, char **);
 thresholds *offset_thresholds = NULL;
@@ -267,6 +268,7 @@ int ntp_request(const char *host, double *offset, int *offset_result, double *ji
                 if(read(conn, &req, SIZEOF_NTPCM(req)) == -1)
                         die(STATE_CRITICAL, "NTP CRITICAL: No response from NTP server\n");
                 DBG(print_ntp_control_message(&req));
+                if (LI(req.flags) == LI_ALARM) li_alarm = 1;
                 /* Each peer identifier is 4 bytes in the data section, which
                  * we represent as a ntp_assoc_status_pair datatype.
                  */
@@ -297,6 +299,10 @@ int ntp_request(const char *host, double *offset, int *offset_result, double *ji
                 status = STATE_WARNING;
                 if(verbose) printf("warning: no synchronization source found\n");
         }
+        if(li_alarm){
+                status = STATE_WARNING;
+                if(verbose) printf("warning: LI_ALARM bit is set\n");
+        }
 
 
         for (i = 0; i < npeers; i++){
@@ -597,7 +603,9 @@ int main(int argc, char *argv[]){
         }
         if(!syncsource_found)
                 asprintf(&result_line, "%s %s,", result_line, _("Server not synchronized"));
-
+        else if(li_alarm)
+                asprintf(&result_line, "%s %s,", result_line, _("Server has the LI_ALARM bit set"));
+ 
         if(offset_result == STATE_UNKNOWN){
                 asprintf(&result_line, "%s %s", result_line, _("Offset unknown"));
                 asprintf(&perfdata_line, "");