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-rw-r--r--src/timesync/timesyncd-manager.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/timesync/timesyncd-manager.c b/src/timesync/timesyncd-manager.c
index d80c72ff5c..60f39c638d 100644
--- a/src/timesync/timesyncd-manager.c
+++ b/src/timesync/timesyncd-manager.c
@@ -574,7 +574,8 @@ static int manager_receive_response(sd_event_source *source, int fd, uint32_t re
return manager_connect(m);
}
- if (NTP_FIELD_LEAP(ntpmsg.field) == NTP_LEAP_NOTINSYNC) {
+ if (NTP_FIELD_LEAP(ntpmsg.field) == NTP_LEAP_NOTINSYNC ||
+ ntpmsg.stratum == 0 || ntpmsg.stratum >= 16) {
log_debug("Server is not synchronized. Disconnecting.");
return manager_connect(m);
}