<html><body><div style="color:#000; background-color:#fff; font-family:times new roman, new york, times, serif;font-size:12pt"><div><span>Sorry, i could solve my problem , it seems that the issue was, even though the messages were getting exchanged, apparantly, the NDP was failing for link local IP address. So when i tried to ping with their link local ip address , it was not even pinging. I assumed that , if they are receiving each other message, they seem to know each other. <br></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;">But it was not the case.<br></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif;
background-color: transparent; font-style: normal;"><span>Why it was sending redirect message, i am still not sure.<br></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><span>What i did to resolve the issue, it seems stupid to me , but there has to be reason for it, one of many things which i dont know.</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><span>Instead of using
command line at client , i used-> GUI-> networking-> Edit connection-> wired connection->IPv6 setting->Selected, automatic, DHCP mode-> checked " required IPv6 addressing for this connection to complete" -> ok</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><span>made interface up and down , and everything started working.</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent;
font-style: normal;"><span>So looks like the command to start dhcp client is missing something? Any inputs ?</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><span>Thanks for any help or comments.</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><br><span></span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif; background-color: transparent; font-style: normal;"><span>Regards,</span></div><div style="color: rgb(0, 0, 0); font-size: 16px; font-family: times new roman,new york,times,serif;
background-color: transparent; font-style: normal;"><span>Sujata</span></div><div><br></div> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div style="font-family: times new roman, new york, times, serif; font-size: 12pt;"> <div dir="ltr"> <font size="2" face="Arial"> <hr size="1"> <b><span style="font-weight:bold;">From:</span></b> Sujata Verma <sujataverma3@yahoo.com><br> <b><span style="font-weight: bold;">To:</span></b> dhcp <dhcp-users@lists.isc.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Wednesday, November 28, 2012 4:02 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> DHCPv6 Client sending ICMP redirect message<br> </font> </div> <br>
<div id="yiv1499932925"><div><div style="color:#000;background-color:#fff;font-family:times new roman, new york, times, serif;font-size:12pt;"><div>Hi,</div><div><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">This is my setup</div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">Linux Fedora core 16 DHCP Client 4.2.4-P2-----Ethernet---Linux Fedora core 16 DHCP Server 4.2.4-P2<br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><br></div><div style="color:rgb(0, 0,
0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">The DHCPv6 client is sending Solicit message, the DHCP server is replying with Advertise message, but the client is not replying with "REPLY" instead it sends ICMPv6 rediret message to server, and server responds with ICMP destination unreachable message. After this process the client again sends the Solicit message,and the process gets repeated, the client doesnt get the ip address.<br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">The same ISC DHCP server if i connect with Windows 2008 as DHCP client, it is accepting the ip address and is working fine.</div><div style="
color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">Below is config file for server with subnet declaration, other are default value from sample file:</div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">=======================<br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">subnet6 2001:db8:1:0::/64
{<br> range6 2001:db8:1:0::7:8 2001:db8:1:0::7:254;<br><br> range6 2001:db8:1:0:: temporary;<br><br><br> prefix6 2001:db8:1:0:: 2001:db8:1:0:: /64;<br><br> option dhcp6.name-servers 2001:db8:1::9:9, 2001:db8:1::9:8;<br><br> <br>}<br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">==============================</div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">starting the server
with:</div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><span style="font-style:italic;">dhcpd -6 -d -cf /etc/dhcp/dhcpd6.conf</span><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">The client file is at /etc/dhcp/dhclient6.conf, created manually with following option:</div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;
font-style:normal;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">==================<br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">script "/sbin/dhclient-script";</div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">interface "em1" {<br><br> request dhcp6.name-servers;<br>}</div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times,
serif;background-color:transparent;font-style:normal;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">==================</div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">the "em1" is the Ethernet interface present on client.</div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;">the client is started by using
following command:<br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><span style="font-style:italic;">/sbin/dhclient -d -6 -sf /sbin/dhclient-script -cf /etc/dhcp/dhclient6.conf </span></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:italic;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:italic;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;"><span>The iptables, ip6tables
and SELinux are disabled on both the machine.</span></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;">The wireshark capture for the message exchange are attached for reference, please let me know, what could be the issue ?</div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;">thanks for any comments or help.</div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;"><br></div><div style="color:rgb(0, 0, 0);
font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;">Regards,</div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:italic;">Sujata<br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:italic;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"><br></div><div style="color:rgb(0, 0, 0);font-size:16px;font-family:times new roman, new york, times, serif;background-color:transparent;font-style:normal;"></div></div></div></div><br>_______________________________________________<br>dhcp-users mailing list<br><a ymailto="mailto:dhcp-users@lists.isc.org" href="mailto:dhcp-users@lists.isc.org">dhcp-users@lists.isc.org</a><br><a
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