[ntp:questions] NTP does not reply to IP addresses that start with 69

Ray nospam.mail at nrc.ca
Tue Apr 1 16:44:17 UTC 2008


Harlan,

Here are sample of the debug output, which include IP addresses that start
with 69.
This first sample gave no reply. I assume it is version 3.
----------------------------------------------------------------------------
-------
 MCAST *****sendpkt(fd=6 dst=192.70.172.132, src=132.246.168.2, ttl=0,
len=48)
transmit: at 37 132.246.168.2->192.70.172.132 mode 4
input_handler: if=2 fd=6 length 48 from d1cd2803 209.205.40.3
receive: at 38 132.246.168.2<-209.205.40.3 restrict 00
receive: at 38 132.246.168.2<-209.205.40.3 mode 3 code 2
 MCAST *****sendpkt(fd=6 dst=209.205.40.3, src=132.246.168.2, ttl=0, len=48)
transmit: at 38 132.246.168.2->209.205.40.3 mode 4
input_handler: if=2 fd=6 length 48 from 453fdb02 69.63.219.2
receive: at 38 132.246.168.2<-69.63.219.2 restrict 00
input_handler: if=2 fd=6 length 48 from d06f2383 208.111.35.131
receive: at 38 132.246.168.2<-208.111.35.131 restrict 00
receive: at 38 132.246.168.2<-208.111.35.131 mode 3 code 2
 MCAST *****sendpkt(fd=6 dst=208.111.35.131, src=132.246.168.2, ttl=0,
len=48)
transmit: at 38 132.246.168.2->208.111.35.131 mode 4
----------------------------------------------------------------------------
-

This sample did reply in mode 4.
-------------------------------------------------
receive: at 182 132.246.168.2<-72.139.76.245 mode 3 code 2
 MCAST *****sendpkt(fd=6 dst=72.139.76.245, src=132.246.168.2, ttl=0,
len=48)
transmit: at 182 132.246.168.2->72.139.76.245 mode 4
input_handler: if=2 fd=6 length 48 from 459c69c0 69.156.105.192
receive: at 182 132.246.168.2<-69.156.105.192 restrict 00
receive: at 182 132.246.168.2<-69.156.105.192 mode 3 code 2
 MCAST *****sendpkt(fd=6 dst=69.156.105.192, src=132.246.168.2, ttl=0,
len=48)
transmit: at 182 132.246.168.2->69.156.105.192 mode 4
input_handler: if=2 fd=6 length 48 from 0426649b 4.38.100.155
receive: at 183 132.246.168.2<-4.38.100.155 restrict 00
----------------------------------------------------------------------------
----

Does this make any sense to you?

Thanks for your help,
Ray
========================================

"Harlan Stenn" <stenn at ntp.org> wrote in message
news:ywn9r6du8xop.fsf at ntp1.isc.org...
> Ray,
>
> >>> In article <fsirdj$28s$1 at nrc-news.nrc.ca>, "Ray" <nospam.mail at nrc.ca>
writes:
>
> Ray> I am running stratum-1 servers with NTP version 4.1.0. There are no
> Ray> restrictions in the NTP configuration and no restrictions in the
> Ray> firewall.  Yet, when I receive NTP request, from version3, and with
an
> Ray> IP address starting with 69, the daemon does not reply to it. The
> Ray> server will reply to NTP packets with version4. The server appears to
> Ray> respond properly to all other subnets.  Does anyone have any ideas
why
> Ray> this happens?
>
> Got any debug output from ntpd that shows it receiving/replying v4 but
> receiving/not replying to v3?
>
> -- 
> Harlan Stenn <stenn at ntp.org>
> http://ntpforum.isc.org  - be a member!





More information about the questions mailing list