No Dynamic DNS Packets

[ccantu at us.ibm.com]

Are you setting you trace filter as
server <==> any
client   <==> any
?

This helps if there are any broadcasts that the server receives, since they
were not directly set to him, just having server <==> any will not capture
this packet.  Also, try to use the MAC instead of IP address.  Therefore
your filter would be
ether server MAC <==> any
ether client MAC   <==> any
.


---------------------- Forwarded by Carlos Cantu/Boulder/IBM on 08/01/2000
09:23 AM ---------------------------

BrianMichalewicz <Brian.Michalewicz at thehartford.com>@isc.org on 08/01/2000
05:42:52 AM

Sent by:  bind-users-bounce at isc.org


To:   " - *bind-users at isc.org" <bind-users at isc.org>
cc:
Subject:  RE: No Dynamic DNS Packets





We've been testing a w2k client in the lab and have yet to see any DDNS
update requests. Does anyone know under what circumstances a W2K client
will attempt to dynamically update the name space ?????

                                                                Thanks,
                                                                    Brian

BTW.. We're looking at sniffer traces as opposed to named debug traces
(we're seeing standard queries). We're using 8.2.2.P5 on NT for the name
service. We're using a standard w2k client with a static ip address, no
DHCP. The "update domain name..." box is checked in the TCP/IP poperities
window.

-----Original Message-----
From: bind-users-bounce at isc.org [mailto:bind-users-bounce at isc.org]On
Behalf Of ccantu at us.ibm.com
Sent: Friday, July 21, 2000 10:35 AM
To: bind-users at isc.org
Subject: Re: No Dynamic DNS Packets






I actually did finally see some DDNS packets.  My problem was that I was
using Netmon on the Win2000 Server which only allows you to capture packets
to/from that local machine.  But since the client was sending a DNS
Register Name packet to 1.2.3.255 (broadcast on that subnet), it didn't
make the filter.  Even though the server was handling the packet, since it
wasn't directly addressed to the server, I wasn't seeing the packet.

I am using a seperate sniffer on my laptop which will snoop any MAC or IP
you give it.  Then, if it's an overwhelming amount of packets, you can
filter on the protocol (like DNS, DHCP...).  I think I have what I need but
thanks for the reply.


---------------------- Forwarded by Carlos Cantu/Boulder/IBM on 07/21/2000
08:32 AM ---------------------------

Barry Finkel <b19141 at achilles.ctd.anl.gov> on 07/21/2000 07:21:50 AM

To:   Carlos Cantu/Boulder/IBM at IBMUS
cc:
Subject:  Re: No Dynamic DNS Packets



>For extra credit:  if someone has a network trace of a DDNS update, I
would
>be interested in looking at it.  I just want to be sure all my bits are in
>the right place when constructing my own DDNS tests.

I have a number of sniffer traces from W2k DDNS.  Most of these are
for a Win2k box trying to register itself, which it does by default.
I have no traces nor experience with DHCP and DDNS.
----------------------------------------------------------------------
Barry S. Finkel
Electronics and Computing Technologies Division
Argonne National Laboratory          Phone:    +1 (630) 252-7277
9700 South Cass Avenue               Facsimile:+1 (630) 252-9689
Building 221, Room B236              Internet: BSFinkel at anl.gov
Argonne, IL   60439-4844             IBMMAIL:  I1004994