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<DIV><SPAN class=437450013-10092008><FONT face=Arial color=#008000>Now that I
read back, I can see where you are confused.</FONT></SPAN></DIV>
<DIV><SPAN class=437450013-10092008><FONT face=Arial
color=#008000></FONT></SPAN> </DIV>
<DIV><SPAN class=437450013-10092008><FONT face=Arial color=#008000>These were 2
different packet captures done at two different times. The first was done when
the client PC was trying to connect via the wireless interface. I captured the
wireless packets with another client using Wireshark. I then connected each
client (Vista machine and Wireshark machine) to a hub and captured the DHCP
packets there. The 2 DHCPOFFER packets (the wired and the wireless) were
identical (other than the packet ID information) in construction, down to the
bit level.</FONT></SPAN></DIV>
<DIV><FONT face=Arial color=#008000></FONT> </DIV>
<DIV><SPAN class=437450013-10092008><FONT face=Arial color=#008000>Based on
this, I do not think it is the wireless infrastructure mugging the packet. My
belief is that the client machine is to blame. It looks like the client, when
wireless, does not know what to do with the broadcast offer packet, while the
wired interface does.</FONT></SPAN></DIV>
<DIV><SPAN class=437450013-10092008><FONT face=Arial
color=#008000></FONT></SPAN> </DIV>
<DIV><SPAN class=437450013-10092008><FONT face=Arial color=#008000>Thanks -
John</FONT></SPAN></DIV>
<DIV><SPAN class=437450013-10092008><FONT face=Arial
color=#008000></FONT></SPAN> </DIV>
<DIV class=OutlookMessageHeader lang=en-us dir=ltr align=left><FONT face=Tahoma
size=2>-----Original Message-----<BR><B>From:</B> dhcp-users-bounce@isc.org
[mailto:dhcp-users-bounce@isc.org] <B>On Behalf Of </B>Frank
Bulk<BR><B>Sent:</B> Wednesday, September 10, 2008 1:10 AM<BR><B>To:</B>
dhcp-users@isc.org<BR><B>Subject:</B> RE: Vista Issue - Wired vs.
Wireless<BR><BR></FONT></DIV>
<DIV class=Section1>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: #1f497d; FONT-FAMILY: 'Tahoma','sans-serif'">Now
I’m confused – can you diagram where you’ve captured the traffic for both a
wired PC and wireless PC?<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: #1f497d; FONT-FAMILY: 'Tahoma','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: #1f497d; FONT-FAMILY: 'Tahoma','sans-serif'">If
the wireless infrastructure is munging your packet, you should compare before
the DHCP Offer enters the wireless infrastructure and then at the client (using
Wireshark, for example).<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: #1f497d; FONT-FAMILY: 'Tahoma','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: #1f497d; FONT-FAMILY: 'Tahoma','sans-serif'">Frank<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: #1f497d; FONT-FAMILY: 'Tahoma','sans-serif'"><o:p> </o:p></SPAN></P>
<DIV>
<DIV
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; PADDING-TOP: 3pt; BORDER-BOTTOM: medium none">
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">
dhcp-users-bounce@isc.org [mailto:dhcp-users-bounce@isc.org] <B>On Behalf Of
</B>John Miller<BR><B>Sent:</B> Tuesday, September 09, 2008 1:31
PM<BR><B>To:</B> dhcp-users@isc.org<BR><B>Subject:</B> RE: Vista Issue - Wired
vs. Wireless<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<P class=MsoNormal><SPAN
style="COLOR: green; FONT-FAMILY: 'Arial','sans-serif'">I never compared the
packets on opposite sides of the wireless. What I compared was a wired packet
vs. a wireless packet, both at the client interface. I could not find any
difference in the two which lead me to believe it is something in the client.
Possibly the wireless hardware doesn't see the broadcast? Doesn't make much
sense, but it is all I can come up with at this
point.</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="COLOR: green; FONT-FAMILY: 'Arial','sans-serif'">Thanks -
John</SPAN><o:p></o:p></P></DIV>
<P class=MsoNormal><SPAN
style="COLOR: green; FONT-FAMILY: 'Arial','sans-serif'"> </SPAN><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'"> -----Original
Message-----<BR><B>From:</B> dhcp-users-bounce@isc.org
[mailto:dhcp-users-bounce@isc.org] <B>On Behalf Of </B>Frank
Bulk<BR><B>Sent:</B> Monday, September 08, 2008 3:37 PM<BR><B>To:</B>
dhcp-users@isc.org<BR><B>Subject:</B> RE: Vista Issue - Wired vs.
Wireless<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Tahoma','sans-serif'">No, I’m
actually talking about the infrastructure piece. But if you see it coming
out of the AP toward the client, then I can’t imagine it’s the
infrastructure. I presume you compare the packet going into the WLAN
infrastructure and the one coming out?<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Tahoma','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Tahoma','sans-serif'">Here’s
the posting I was thinking of:<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Tahoma','sans-serif'"><A
href="http://listserv.educause.edu/cgi-bin/wa.exe?A2=ind0807&L=wireless-lan&T=0&F=&S=&P=6042">http://listserv.educause.edu/cgi-bin/wa.exe?A2=ind0807&L=wireless-lan&T=0&F=&S=&P=6042</A><o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Tahoma','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Tahoma','sans-serif'">Frank<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: blue; FONT-FAMILY: 'Tahoma','sans-serif'"><o:p> </o:p></SPAN></P>
<DIV>
<DIV
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; PADDING-TOP: 3pt; BORDER-BOTTOM: medium none">
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">
dhcp-users-bounce@isc.org [mailto:dhcp-users-bounce@isc.org] <B>On Behalf Of
</B>John Miller<BR><B>Sent:</B> Monday, September 08, 2008 9:13 AM<BR><B>To:</B>
dhcp-users@isc.org<BR><B>Subject:</B> RE: Vista Issue - Wired vs.
Wireless<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<P class=MsoNormal><SPAN
style="COLOR: green; FONT-FAMILY: 'Arial','sans-serif'">Frank, when you
reference vendor's WLAN gear, are you talking about the client side interface
piece? We do see the offer in the air, so it is propagating through our APs and
the controller.</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="COLOR: green; FONT-FAMILY: 'Arial','sans-serif'">Does anyone know if
Microsoft is going to put out a fix for this that incorporates the registry
change referenced in 928233?</SPAN><o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal><SPAN
style="COLOR: green; FONT-FAMILY: 'Arial','sans-serif'">Thanks -
John</SPAN><o:p></o:p></P></DIV>
<P class=MsoNormal><SPAN
style="COLOR: green; FONT-FAMILY: 'Arial','sans-serif'"> </SPAN><o:p></o:p></P>
<P class=MsoNormal style="MARGIN-BOTTOM: 12pt"><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'"> -----Original
Message-----<BR><B>From:</B> dhcp-users-bounce@isc.org
[mailto:dhcp-users-bounce@isc.org] <B>On Behalf Of </B>Frank
Bulk<BR><B>Sent:</B> Saturday, September 06, 2008 10:24 PM<BR><B>To:</B>
dhcp-users@isc.org<BR><B>Subject:</B> RE: Vista Issue - Wired vs.
Wireless<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: #1f497d; FONT-FAMILY: 'Tahoma','sans-serif'">This
is best answered on EDUCAUSE’s WIRELESS-LAN listserv, but something in my mind
is saying that a certain wireless infrastructure vendor’s WLAN gear doesn’t like
the contents of the DHCPOFFER, perhaps something about broadcast
part?<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: #1f497d; FONT-FAMILY: 'Tahoma','sans-serif'"><o:p> </o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: #1f497d; FONT-FAMILY: 'Tahoma','sans-serif'">Frank<o:p></o:p></SPAN></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; COLOR: #1f497d; FONT-FAMILY: 'Tahoma','sans-serif'"><o:p> </o:p></SPAN></P>
<DIV>
<DIV
style="BORDER-RIGHT: medium none; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; PADDING-LEFT: 0in; PADDING-BOTTOM: 0in; BORDER-LEFT: medium none; PADDING-TOP: 3pt; BORDER-BOTTOM: medium none">
<P class=MsoNormal><B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">From:</SPAN></B><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Tahoma','sans-serif'">
dhcp-users-bounce@isc.org [mailto:dhcp-users-bounce@isc.org] <B>On Behalf Of
</B>John Miller<BR><B>Sent:</B> Thursday, September 04, 2008 8:26
AM<BR><B>To:</B> dhcp-users@isc.org<BR><B>Subject:</B> Vista Issue - Wired vs.
Wireless<o:p></o:p></SPAN></P></DIV></DIV>
<P class=MsoNormal><o:p> </o:p></P>
<DIV>
<P class=MsoNormal>I have a rather strange problem that I hope someone can help
me with. This is a general DCHP issue as I am not sure what software the server
is running.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>We have several Vista clients that are not able to get
an IP address when trying to connect wirelessly. They connect just fine when
wired. The DHCP server is the same machine. I have done packet captures for both
wired and wireless. I can see the DHCPREQUEST go to the server and I can see the
DHCPOFFER come from the server. The server logs confirm the request and offer.
In each case (wired and wireless) the DHCPOFFER looks identical. The only
difference is that when wired the computer responds to the DHCPOFFER and does
not respond when wireless. I have not seen any correlation with the brand of
adapter, but that could be because we have not looked for one.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>The only way we have found to resolve this issue is to do the
Vista registry fix to turn off the broadcast flag in the DHCPREQUEST for the
wireless adapter (KB 928233). While this will work, it means that any student
who wants to connect to the wireless AND has Vista will need to bring their
computer to our office to have the fix implemented.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Has anyone ever seen this issue and found another way to
resolve it?<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Thanks - John<o:p></o:p></P></DIV>
<DIV>
<P class=MsoNormal> <o:p></o:p></P></DIV>
<P class=MsoNormal><SPAN
style="FONT-FAMILY: 'Arial','sans-serif'">-----</SPAN><o:p></o:p></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Arial','sans-serif'">John H.
Miller</SPAN><o:p></o:p></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Arial','sans-serif'">Asst. Dir. of
CNS for Telecom<BR>Muskingum College</SPAN><o:p></o:p></P>
<P class=MsoNormal><SPAN style="FONT-FAMILY: 'Arial','sans-serif'">Computer
& Network Services<BR>163 Stormont Street<BR>New Concord, Ohio
43762<BR>Phone (740) 826-8052<BR>Fax (740)
826-8065</SPAN><o:p></o:p></P>
<DIV>
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