[ntp:hackers] NTP Development Snapshot ntp-4.2.8p3-RC1 Released

Charles Elliott elliott.ch at comcast.net
Sun May 17 15:20:46 UTC 2015


There are three problems with ntp-4.2.8p3-RC1:

1) Suppose a client/server running ntp-4.2.8p3-RC1 is accessing time from 9
Internet stratum 1 & 2 servers.  Then suppose a client on the LAN is
accessing time from the aforementioned client/server.  The second client has
an incorrect Refid.  For example, local computer 192.168.0.78 is synced to
clock.nyc.he.net  [2001:470:0:2c8::2], whose Refid is CDMA.  However, local
computer 192.168.0.100, which is synced to 192.168.0.78, shows Refid of the
sync'ed server to be dbsq0013.whservidor.com [200.98.196.212].  I checked
the packets with Wireshark (version 1.12.5); here is the actual packet
dissection:

No.     Time            Source        Destination        Protocol Length
Info
13 13:58:13.384923000 192.168.1.78   192.168.1.100         NTP      90
NTP Version 4, server

Frame 13: 90 bytes on wire (720 bits), 90 bytes captured (720 bits) on
interface 0
Ethernet II, Src: SpeedDra_99:9a:9c (00:13:3b:99:9a:9c), Dst: Evga_10:d8:8d
(00:1f:bc:10:d8:8d)
Internet Protocol Version 4, Src: 192.168.1.78 (192.168.1.78), Dst:
192.168.1.100 (192.168.1.100)
User Datagram Protocol, Src Port: ntp (123), Dst Port: ntp (123)
Network Time Protocol (NTP Version 4, server)
    Flags: 0x24
    Peer Clock Stratum: secondary reference (2)
    Peer Polling Interval: 4 (16 sec)
    Peer Clock Precision: 0.000000 sec
    Root Delay:    0.0119 sec
    Root Dispersion:    0.0039 sec
    Reference ID: dbsq0013.whservidor.com
    Reference Timestamp: May 17, 2015 13:57:09.109397000 UTC
    Origin Timestamp: May 17, 2015 13:58:13.383995000 UTC
    Receive Timestamp: May 17, 2015 13:58:13.384871000 UTC
    Transmit Timestamp: May 17, 2015 13:58:13.384901000 UTC         

Here is the grid display from Meinberg's NTP monitor program of the
client/server (192.168.0.78) sync'ed to clock.nyc.he.net:
State	Remote		Refid	Stratum	Type		When	Poll
Reach	Delay	Offset	Jitter
-	2610:20:6f15:15::27		ACTS	1	Unicast server	14
32	377	17.335	2.080	1.890	
*	2001:470:0:2c8::2		CDMA	1	Unicast server	20
32	377	12.245	0.437	1.542	
+	ntp1.conectiv.com		IRIG	1	Unicast server	13
32	377	23.803	0.220	1.860	
-	ntp.colby.edu		GPS	1	Unicast server	18	32
377	25.221	-0.681	3.471	
-	time-c.nist.gov		ACTS	1	Unicast server	14	32
377	17.357	1.543	2.010	
 	nist1-pa.ustiming.org		INIT	16	Unicast server
2371d	32	000	0.000	0.000	0.000	
-	tick.jrc.us		bonehed.lcs.mit.edu	2	Unicast
server	17	32	377	16.789	0.746	1.321	
-	tock.jrc.us		ntps11.jensenresearch.com	2
Unicast server	15	32	377	16.886	-0.354	0.151	
+	static-74-104-167-114.bstnma.fios.verizon.net		GPS	1
Unicast server	17	32	377	23.243	0.174	0.581	

Here is the grid display from Meinberg's NTP monitor program of the LAN
client (192.168.0.100) sync'ed 192.168.0.78:

State	Remote		Refid	Stratum	Type		When	Poll
Reach	Delay	Offset	Jitter
*	192.168.1.78 200.98.196.212	2	Unicast server	15	16
377	1.069	0.005	0.022	
+	192.168.1.81 192.168.1.78	3	Unicast server	14	16
377   0.419	-0.065 0.022	
+	192.168.1.1	192.168.1.78	3	Unicast server	3	16
377	0.221	0.235	0.026


Where 200.98.196.212 = dbsq0013.whservidor.com.

This error has been in NTPD for the last two release candidates.

Error 2: 
Someone changed the compiler output directory from
ports\winnt\vs2013\Win32-bin\Release to 
ports\winnt\vs2013\Win32-out\Release, without, as far as I know, telling
anyone.  It took 
hours to find that change, and not a few minutes to change the installation
script.

Error 3:
Clicking on the email release notice line
"http://archive.ntp.org/ntp4/ntp-4.2/ntp-4.2.8p3-RC1.tar.gz.md5" produces
the URL http://archive.ntp.org/ntp4/ntp-4.2/ntp-4.2.8p3-RC1.tar.gz.gz, to
which WinZip objects mightily.

Charles Elliott

> -----Original Message-----
> From: hackers [mailto:hackers-
> bounces+elliott.ch=comcast.net at lists.ntp.org] On Behalf Of NTP Public
> Services Project
> Sent: Tuesday, May 12, 2015 7:31 AM
> To: hackers at lists.ntp.org
> Subject: [ntp:hackers] NTP Development Snapshot 4.3.33 Released
> 
> NTP Development Snapshot 4.3.33 is now available for download.
> 
> Bug Fixes:
> 
> * [Bug 2745] ntpd -x steps clock on leap second
>    Do leap second stepping only of the step adjustment is beyond the
>    proper jump distance limit and step correction is allowed at all.
>    http://bugs.ntp.org/2745
> 
> Other Changes:
> 
> * 4.2.8p3-RC1
> 
> Tarball:
> 
> http://archive.ntp.org/ntp4/ntp-dev/ntp-dev-4.3.33.tar.gz
> 
> MD5 sum:
> 
> http://archive.ntp.org/ntp4/ntp-dev/ntp-dev-4.3.33.tar.gz.md5
> 
> Complete ChangeLog:
> 
> http://archive.ntp.org/ntp4/ChangeLog-dev
> 
> Please report any bugs, issues, or desired enhancements at
> http://bugs.ntp.org/.
> 
> _______________________________________________
> hackers mailing list
> hackers at lists.ntp.org
> http://lists.ntp.org/listinfo/hackers



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