DHCPINFORM

[Glenn Satchell]

>Date: Wed, 4 Feb 2009 13:44:36 +0100
>Subject: Re: DHCPINFORM
>From: Marty Sørensen <buzzwork at gmail.com>
>To: Users of ISC DHCP <dhcp-users at lists.isc.org>
>X-BeenThere: dhcp-users at lists.isc.org
>
> Hey Randall,
> 
> Thanks for the reply. It seens that the switch relay's the option-82 OK, in
> this case, but the server drops it ?
> 
> Martin
> 
DHCPINFORM is unicast to the dhcp server, so the switch's relay never
sees it. Relays only see broadcast packets, then add the option-82 and
forward tot he dhcp server.

See the posts earlier today about how responses to DHCPINFORM don't
look at existing lease data. This includes any options added by the
relay when it processed the DHCPDISCOVER.

regards,
-glenn