<html><head><style type='text/css'>p { margin: 0; }</style></head><body><div style='font-family: Andale Mono; font-size: 10pt; color: #000000'>ahh - so it still isn't there if the client didn't included it in the DUID. Sadly, not all clients do (windows / linux do - D-Link does not - I suspect that many router manufacturers will not).<br><br><div><br></div><hr id="zwchr"><blockquote style="border-left:2px solid rgb(16, 16, 255);margin-left:5px;padding-left:5px;color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;"><b>From: </b>"Casey Deccio" <casey@deccio.net><br><b>To: </b>"Users of ISC DHCP" <dhcp-users@lists.isc.org><br><b>Cc: </b>"Tom Ammon" <tom.ammon@utah.edu><br><b>Sent: </b>Tuesday, January 24, 2012 12:33:56 PM<br><b>Subject: </b>Re: DHCPv6 and MAC Address inclusion<br><br>On Tue, Jan 24, 2012 at 6:53 AM, perl-list <span dir="ltr"><<a href="mailto:perl-list@network1.net" target="_blank">perl-list@network1.net</a>></span> wrote:<br><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div><div style="font-size:10pt;font-family:Andale Mono">I for one would love to see your config to see how you are doing this. The hardware ethernet isn't included in the DHCPv6 packet (at least as far as I can see from packet captures) other than as part of the client-id (DUID) on *SOME* clients (ie: NOT d-link). Would love to see your configs... Didn't know the DHCP server decoded the DUID to know what the hardware ethernet is.<br>
<br></div></div></blockquote><div><br>From DHCP 4.2.3-P2 release notes [1]:<br><br> "Changes since 4.1.0 (new features)<br>
...<br>- The 'hardware [ethernet|etc] ...;' parameter in host records has been<br> extended to attempt to match DHCPv6 clients by the last octets of a<br> DUID-LL or DUID-LLT provided by the client."<br><br>
This feature was added in DHCP 4.2.0, but RedHat has backported this change to the 4.1.x version distributed with RHEL6.2.<br>
<br>
Casey<br><br>[1] <a href="https://deepthought.isc.org/article/AA-00595" target="_blank">https://deepthought.isc.org/article/AA-00595</a><br>
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