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List: winpcap-bugs
Subject: Re: [Winpcap-bugs] Windows 7 and pcap_findalldevs
From: "Gianluca Varenni" <gianluca.varenni () cacetech ! com>
Date: 2009-10-30 17:54:44
Message-ID: 3B65E06E2E4849F08A0FB1257AEB8D8C () NELSON3
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Did you actually check that the address is an IPv4 one?
GV
----- Original Message -----
From: Larry Weaver
To: winpcap-bugs@winpcap.org
Sent: Friday, October 30, 2009 10:41 AM
Subject: [Winpcap-bugs] Windows 7 and pcap_findalldevs
I've just upgraded to window 7 and there is a new behavior for findalldevs. Under \
xp the address returned could be used to add the ipaddress of an interface to it's \
description
s = gcnew String(iptos(((struct sockaddr_in \
*)d->addresses->addr)->sin_addr.s_addr)) + " " + s;
but under windows 7, the address comes back from findalldevs as 0 (leading to a \
0.0.0.0 being added to the description). I don't have vista, so I don't know if this \
is the same behavior under vista or not.
Wireshark has the same behavior. When it starts under windows 7 it lists the \
adapters with no ip. Since my motherboards have two nvidia Ethernet ports I have to \
select the correct one by trial and error.
I assume this is a bug and not just the new expected behavior.
Larry
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<DIV><FONT size=2>Did you actually check that the address is an IPv4
one?</FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2>GV</FONT></DIV>
<DIV> </DIV>
<BLOCKQUOTE
style="PADDING-RIGHT: 0px; PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 \
2px solid; MARGIN-RIGHT: 0px"> <DIV style="FONT: 10pt arial">----- Original Message \
----- </DIV> <DIV
style="BACKGROUND: #e4e4e4; FONT: 10pt arial; font-color: black"><B>From:</B>
<A title=LW@LWConsulting.com href="mailto:LW@LWConsulting.com">Larry
Weaver</A> </DIV>
<DIV style="FONT: 10pt arial"><B>To:</B> <A title=winpcap-bugs@winpcap.org
href="mailto:winpcap-bugs@winpcap.org">winpcap-bugs@winpcap.org</A> </DIV>
<DIV style="FONT: 10pt arial"><B>Sent:</B> Friday, October 30, 2009 10:41
AM</DIV>
<DIV style="FONT: 10pt arial"><B>Subject:</B> [Winpcap-bugs] Windows 7 and
pcap_findalldevs</DIV>
<DIV><BR></DIV>
<DIV class=Section1>
<P class=MsoNormal>I’ve just upgraded to window 7 and there is a new behavior
for findalldevs. Under xp the address returned could be used to add the
ipaddress of an interface to it’s description<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal><SPAN
style="FONT-SIZE: 10pt; FONT-FAMILY: 'Courier \
New'"> \
<SPAN style="COLOR: #010001">s</SPAN> = <SPAN style="COLOR: blue">gcnew</SPAN>
<SPAN style="COLOR: #010001">String</SPAN>(<SPAN
style="COLOR: #010001">iptos</SPAN>(((<SPAN style="COLOR: blue">struct</SPAN>
<SPAN style="COLOR: #010001">sockaddr_in</SPAN> *)<SPAN
style="COLOR: #010001">d</SPAN>-><SPAN
style="COLOR: #010001">addresses</SPAN>-><SPAN
style="COLOR: #010001">addr</SPAN>)-><SPAN
style="COLOR: #010001">sin_addr</SPAN>.<SPAN
style="COLOR: #010001">s_addr</SPAN>)) + <SPAN style="COLOR: #a31515">"
"</SPAN> + <SPAN style="COLOR: #010001">s</SPAN>;<o:p></o:p></SPAN></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>but under windows 7, the address comes back from
findalldevs as 0 (leading to a 0.0.0.0 being added to the description).
I don’t have vista, so I don’t know if this is the same behavior under vista
or not.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Wireshark has the same behavior. When it starts under
windows 7 it lists the adapters with no ip. Since my motherboards have
two nvidia Ethernet ports I have to select the correct one by trial and
error.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>I assume this is a bug and not just the new expected
behavior.<o:p></o:p></P>
<P class=MsoNormal><o:p> </o:p></P>
<P class=MsoNormal>Larry<o:p></o:p></P></DIV>
<P>
<HR>
<P></P>_______________________________________________<BR>Winpcap-bugs mailing
list<BR>Winpcap-bugs@winpcap.org<BR>https://www.winpcap.org/mailman/listinfo/winpcap-bugs<BR></BLOCKQUOTE></BODY></HTML>
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