<html><body>
<p>Anybody can help about the <tt>Interface Discovery issue</tt>?<br>
<br>
Thanks.<br>
<br>
Best&Regards<br>
<br>
Andy Hu(Yong Bo)<br>
TCP/IP on IBM i<br>
IBM China System & Technology Lab in Beijing<br>
TEL: (8610)82454525<br>
E-Mail:huyongbo@cn.ibm.com<br>
<br>
<img width="16" height="16" src="cid:1__=C7BBFC31DFBA275F8f9e8a93df938@cn.ibm.com" border="0" alt="Inactive hide details for dhcp-workers-request---2009-12-31 20:00:51---Send dhcp-workers mailing list submissions to dhcp-work"><font color="#424282">dhcp-workers-request---2009-12-31 20:00:51---Send dhcp-workers mailing list submissions to dhcp-workers@lists.isc.org</font><br>
<br>
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr valign="top"><td width="1%"><img width="96" height="1" src="cid:2__=C7BBFC31DFBA275F8f9e8a93df938@cn.ibm.com" border="0" alt=""><br>
<font size="2" color="#5F5F5F">From:</font></td><td width="100%"><img width="1" height="1" src="cid:2__=C7BBFC31DFBA275F8f9e8a93df938@cn.ibm.com" border="0" alt=""><br>
<font size="2">dhcp-workers-request@lists.isc.org</font></td></tr>
<tr valign="top"><td width="1%"><img width="96" height="1" src="cid:2__=C7BBFC31DFBA275F8f9e8a93df938@cn.ibm.com" border="0" alt=""><br>
<font size="2" color="#5F5F5F">To:</font></td><td width="100%"><img width="1" height="1" src="cid:2__=C7BBFC31DFBA275F8f9e8a93df938@cn.ibm.com" border="0" alt=""><br>
<font size="2">dhcp-workers@lists.isc.org</font></td></tr>
<tr valign="top"><td width="1%"><img width="96" height="1" src="cid:2__=C7BBFC31DFBA275F8f9e8a93df938@cn.ibm.com" border="0" alt=""><br>
<font size="2" color="#5F5F5F">Date:</font></td><td width="100%"><img width="1" height="1" src="cid:2__=C7BBFC31DFBA275F8f9e8a93df938@cn.ibm.com" border="0" alt=""><br>
<font size="2">2009-12-31 20:00</font></td></tr>
<tr valign="top"><td width="1%"><img width="96" height="1" src="cid:2__=C7BBFC31DFBA275F8f9e8a93df938@cn.ibm.com" border="0" alt=""><br>
<font size="2" color="#5F5F5F">Subject:</font></td><td width="100%"><img width="1" height="1" src="cid:2__=C7BBFC31DFBA275F8f9e8a93df938@cn.ibm.com" border="0" alt=""><br>
<font size="2">dhcp-workers Digest, Vol 11, Issue 8</font></td></tr>
<tr valign="top"><td width="1%"><img width="96" height="1" src="cid:2__=C7BBFC31DFBA275F8f9e8a93df938@cn.ibm.com" border="0" alt=""><br>
<font size="2" color="#5F5F5F">Sent by:</font></td><td width="100%"><img width="1" height="1" src="cid:2__=C7BBFC31DFBA275F8f9e8a93df938@cn.ibm.com" border="0" alt=""><br>
<font size="2">dhcp-workers-bounces+huyongbo=cn.ibm.com@lists.isc.org</font></td></tr>
</table>
<hr width="100%" size="2" align="left" noshade style="color:#8091A5; "><br>
<br>
<br>
<tt>Send dhcp-workers mailing list submissions to<br>
dhcp-workers@lists.isc.org<br>
<br>
To subscribe or unsubscribe via the World Wide Web, visit<br>
</tt><tt><a href="https://lists.isc.org/mailman/listinfo/dhcp-workers">https://lists.isc.org/mailman/listinfo/dhcp-workers</a></tt><tt><br>
or, via email, send a message with subject or body 'help' to<br>
dhcp-workers-request@lists.isc.org<br>
<br>
You can reach the person managing the list at<br>
dhcp-workers-owner@lists.isc.org<br>
<br>
When replying, please edit your Subject line so it is more specific<br>
than "Re: Contents of dhcp-workers digest..."<br>
<br>
<br>
Today's Topics:<br>
<br>
1. DHCPD port on Win32? (Autuori Gianluigi)<br>
2. Interface Discover issue in ISC DHCP 4.1.0 (Yong Bo Hu)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Wed, 30 Dec 2009 23:32:37 +0100<br>
From: "Autuori Gianluigi" <Autuori.Gianluigi.Wintime@ansaldobreda.it><br>
Subject: DHCPD port on Win32?<br>
To: <dhcp-workers@lists.isc.org><br>
Message-ID:<br>
<A691B9541CD614449A7702B21C5BBD59038E2878@abnaex01.ab.ansaldobreda.it><br>
Content-Type: text/plain; charset="Windows-1252"<br>
<br>
I have to use win32 platform and I need dhcpd. Is there any port of isc dhcpd?<br>
<br>
thanks<br>
<br>
<br>
--------------------------------------------------------------------------------<br>
Questo messaggio e-mail e ogni documento ad esso eventualmente allegato puo' avere carattere riservato ed essere tutelato da segreto. Esso,comunque, e'<br>
ad esclusivo utilizzo del destinatario in indirizzo. Qualora non foste il destinatario del messaggio vi preghiamo di volerci avvertire immediatamente per e-mail o telefono e di cancellare il presente messaggio e ogni eventuale allegato dal vostro sistema. E' vietata la duplicazione o l'utilizzo per qualunque fine del messaggio e di ogni allegato, nonche' la loro divulgazione, distribuzione o inoltro a terzi senza l'espressa autorizzazione del mittente. In ragione del mezzo di trasmissione utilizzato, il mittente non assume alcuna responsabilita' sulla segretezza/riservatezza delle informazioni contenute nel messaggio e nei relativi allegati. <br>
<br>
This e-mail and any file transmitted with it may contain material that is confidential, privileged and/or attorney work product for the sole use of the intended recipient. If you are not the intended recipient of this e-mail, please do not read it, notify us immediately by e-mail or by telephone and then delete this message and any file attached from your system. You should not copy or use it for any purpose, disclose the contents of the same to any other person or forward it without express permission.<br>
Considering the means of transmission, we do not undertake any liability with respect to the secrecy and confidentiality of the information contained in this e-mail and its attachments.<br>
<br>
<br>
<br>
------------------------------<br>
<br>
Message: 2<br>
Date: Thu, 31 Dec 2009 12:05:48 +0800<br>
From: Yong Bo Hu <huyongbo@cn.ibm.com><br>
Subject: Interface Discover issue in ISC DHCP 4.1.0<br>
To: dhcp-workers@lists.isc.org<br>
Message-ID:<br>
<OF3A8330EE.916E1B71-ON4825769D.00164935-4825769D.00167E1F@cn.ibm.com><br>
Content-Type: text/plain; charset="us-ascii"<br>
<br>
<br>
<br>
Not sure whether it's fine to send this there.<br>
<br>
The scenario:<br>
Interface ETH0, has and only has IPv4:192.168.1.2 and IPv6 aaaa::cccc. Now<br>
the IPv4 address is down, and the IPv6 address is up. And ranges of<br>
192.168.1.0 and aaaa::/64 are configured. Next start the DHCP server with<br>
IPv6(-6), the result is the ETH0 is skipped with no message in the log<br>
about this interface. If the IPv4 is up, the ETH0 can be listened.<br>
<br>
After debug, I locate the code in discover.c:.<br>
<br>
/* Skip non broadcast interfaces (plus loopback and<br>
point-to-point in case an OS incorrectly marks them<br>
as broadcast). Also skip down interfaces unless we're:<br>
trying to get a list of configurable interfaces. */<br>
if (((!(info.flags & IFF_BROADCAST) ||<br>
info.flags & IFF_LOOPBACK ||)<br>
info.flags & IFF_POINTOPOINT) && !tmp) ||<br>
(!(info.flags & IFF_UP) &&<br>
state != DISCOVER_UNCONFIGURED))<br>
continue;<br>
<br>
On the surface, the interface can be listened depending on the state of<br>
IPv4 address when starting IPv6 DHCP, but it shouldn't. The key point here<br>
is the IFF_BROADCAST flag, for ordinary IPv4 address, it's broadcast<br>
address valid, but for IPv6, which has not broadcast, but has multicast<br>
(IFF_MULTICAST), so i think it would need to differentiate the IPv4 and<br>
IPv6 when to check which interface needs to skip.<br>
<br>
Best&Regards<br>
Andy<br>
-------------- next part --------------<br>
An HTML attachment was scrubbed...<br>
URL: <</tt><tt><a href="https://lists.isc.org/pipermail/dhcp-workers/attachments/20091231/9a5472b8/attachment-0001.html">https://lists.isc.org/pipermail/dhcp-workers/attachments/20091231/9a5472b8/attachment-0001.html</a></tt><tt>><br>
<br>
------------------------------<br>
<br>
_______________________________________________<br>
dhcp-workers mailing list<br>
dhcp-workers@lists.isc.org<br>
</tt><tt><a href="https://lists.isc.org/mailman/listinfo/dhcp-workers">https://lists.isc.org/mailman/listinfo/dhcp-workers</a></tt><tt><br>
<br>
End of dhcp-workers Digest, Vol 11, Issue 8<br>
*******************************************<br>
</tt><br>
<br>
</body></html>