Openntpd problem

savago


8.1-RELEASE-p1 FreeBSD 8.1-RELEASE-p1 #1: Sun Nov 14 17:21:29 EST 2010     sullrich@FreeBSD_8.0_pfSense_2.0-snaps.pfsense.org:/usr/obj.pfSense/usr/pfSensesrc/src/sys/pfSense_SMP.8  i386

System: General Setup
Time zone: Europe/Sofia
NTP time server: bg.pool.ntp.org


ps aux | grep ntp
_ntp   63553  0.0  0.1  3316  1352  ??  I    11:15PM   0:00.01 ntpd: ntp engine (ntpd)
root   63847  0.0  0.1  3316  1340  ??  Ss   11:15PM   0:00.00 ntpd: [priv] (ntpd)
root   60299  0.0  0.1  3524  1252   0  S+   11:40PM   0:00.00 grep ntp


sockstat -4 -p 123
USER     COMMAND    PID   FD PROTO  LOCAL ADDRESS         FOREIGN ADDRESS      
_ntp     ntpd       63553 8  udp4   87.120.x.y:50083  213.16.33.98:123
_ntp     ntpd       63553 14 udp4   192.168.0.254:123     *:*
_ntp     ntpd       63553 15 udp4   87.120.x.y:21596  109.160.96.3:123
_ntp     ntpd       63553 16 udp4   87.120.x.y:41771  84.54.128.8:123

request from client to local server


rdate -ncv 192.168.0.254
rdate: Ignoring NTP server with alarm flag set
rdate: Unable to get a reasonable time estimate

tcpdump on server


tcpdump -vni re0 port 123
tcpdump: listening on re0, link-type EN10MB (Ethernet), capture size 96 bytes
23:46:17.678669 IP (tos 0x0, ttl 64, id 3027, offset 0, flags [DF], proto UDP (17), length 76)
    192.168.0.10.49930 > 192.168.0.254.123: NTPv4, length 48
	Client, Leap indicator:  (0), Stratum 0, poll 0s, precision 0
	Root Delay: 0.000000, Root dispersion: 0.000000, Reference-ID: (unspec)
	  Reference Timestamp:  0.000000000
	  Originator Timestamp: 0.000000000
	  Receive Timestamp:    0.000000000
	  Transmit Timestamp:   30099702.756250398 (2037/01/20 17:29:58)
	    Originator - Receive Timestamp:  0.000000000
	    Originator - Transmit Timestamp: 30099702.756250398 (2037/01/20 17:29:58)
23:46:17.678829 IP (tos 0x10, ttl 64, id 16367, offset 0, flags [none], proto UDP (17), length 76, bad cksum 0 (->b849)!)
    192.168.0.254.123 > 192.168.0.10.49930: NTPv4, length 48
	Server, Leap indicator: clock unsynchronized (192), Stratum 4, poll 0s, precision -21
	Root Delay: 0.005401, Root dispersion: 0.000000, Reference-ID: 219.32.194.102
	  Reference Timestamp:  3498846208.091878890 (2010/11/15 23:43:28)
	  Originator Timestamp: 30099702.756250398 (2037/01/20 17:29:58)
	  Receive Timestamp:    3498846377.678762912 (2010/11/15 23:46:17)
	  Transmit Timestamp:   3498846377.678769111 (2010/11/15 23:46:17)
	    Originator - Receive Timestamp:  -826220621.077487483
	    Originator - Transmit Timestamp: -826220621.077481284

request from client to some ntp pools, work


rdate -ncv bg.pool.ntp.org
Mon Nov 15 23:48:10 EET 2010
rdate: adjust local clock by -0.072800 seconds

Michael Sh.

ntpd need some time after start for synchronization. Before it ntpd ask to clients:”I am a bad clock”:)