ntp: add debug message for received packet

ntp_io.c

@@ -537,6 +537,13 @@ read_from_socket(void *anything)
 #endif
     }
 
+    if (status > 0) {
+      DEBUG_LOG(LOGF_NtpIO, "Received %d bytes from %s:%d to %s fd %d",
+          status,
+          UTI_IPToString(&remote_addr.ip_addr), remote_addr.port,
+          UTI_IPToString(&local_addr.ip_addr), local_addr.sock_fd);
+    }
+
     if (status >= NTP_NORMAL_PACKET_SIZE && status <= sizeof(NTP_Packet)) {
 
       NSR_ProcessReceive((NTP_Packet *) &message.ntp_pkt, &now, now_err,