DHCPINFORM
Marty Sørensen
buzzwork at gmail.com
Wed Feb 4 12:44:36 UTC 2009
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
On Wed, Feb 4, 2009 at 9:49 AM, Randall C Grimshaw <rgrimsha at syr.edu> wrote:
> There are known issues with Inform. It tracks global options OK but options
> defined more specifically and provided correctly in the offer can be
> overridden in the inform. But option-82 data comes from specific relay
> types. You might need to review the switch documentation.
>
> ________________________________________
> From: dhcp-users-bounces at lists.isc.org [dhcp-users-bounces at lists.isc.org]
> On Behalf Of Marty Sørensen [buzzwork at gmail.com]
> Sent: Wednesday, February 04, 2009 3:29 AM
> To: dhcp-users at lists.isc.org
> Subject: DHCPINFORM
>
> Hello,
>
> Hope some one can help me or kick me in the right direction on this matter.
>
> I have been reading the RFC on DHCPINFORM but cant find out if the
> DHCPserver has to reply with all options (special option-82) on DHCPINFORM -
> ACK ?
>
> This snif is from an Debian 3.0.7 box. It seems that the DHCPserver is
> dropping the option-82 information. Is this right or a "feature / bug" :-)
>
> Hope to get some info.
>
> Many thanks
>
> Martin
> DK
>
> ---
>
> ---------------------------------------------------------------------------
> TIME: 12:38:24.455494
> IP: > (00:1e:f7:5e:63:7a) > (00:50:56:97:32:84)
> OP: 1 (BOOTPREQUEST)
> HTYPE: 1 (Ethernet)
> HLEN: 6
> HOPS: 1
> XID: 03e645e9
> SECS: 768
> FLAGS: 0
> CIADDR: 89.x.x.155
> YIADDR: 0.0.0.0
> SIADDR: 0.0.0.0
> GIADDR: 89.x.x.252
> CHADDR: 00:30:05:ed:6a:a5:00:00:00:00:00:00:00:00:00:00
> SNAME: .
> FNAME: .
> OPTION: 53 ( 1) DHCP message type 8 (DHCPINFORM)
> OPTION: 61 ( 7) Client-identifier 01:00:30:05:ed:6a:a5
> OPTION: 12 ( 9) Host name STATION'R
> OPTION: 60 ( 8) Vendor class identifier MSFT 5.0
> OPTION: 55 ( 12) Parameter Request List 1 (Subnet mask)
> 15 (Domainname)
> 3 (Routers)
> 6 (DNS server)
> 44 (NetBIOS name server)
> 46 (NetBIOS node type)
> 47 (NetBIOS scope)
> 31 (Perform router discovery)
> 33 (Static route)
> 249 (MSFT - Classless route)
> 43 (Vendor specific info)
> 252 (MSFT - WinSock Proxy Auto
> Detect)
>
> OPTION: 43 ( 3) Vendor specific info dc0100 ...
> OPTION: 82 ( 18) Relay Agent Information
> Circuit-ID 01:08:00:65 <unknown-0>
> *MALFORMED -- TOO LARGE*
>
> ---------------------------------------------------------------------------
> TIME: 12:38:24.456317
> IP: > (00:50:56:97:32:84) > (00:1e:f7:5e:63:7a)
> OP: 2 (BOOTPREPLY)
> HTYPE: 1 (Ethernet)
> HLEN: 6
> HOPS: 1
> XID: 03e645e9
> SECS: 768
> FLAGS: 0
> CIADDR: 89.x.x.155
> YIADDR: 0.0.0.0
> SIADDR: 0.0.0.0
> GIADDR: 89.x.x.253
> CHADDR: 00:30:05:ed:6a:a5:00:00:00:00:00:00:00:00:00:00
> SNAME: .
> FNAME: .
> OPTION: 53 ( 1) DHCP message type 5 (DHCPACK)
> OPTION: 54 ( 4) Server identifier 10.57.2.1
> OPTION: 1 ( 4) Subnet mask 255.255.255.0
> OPTION: 15 ( 21) Domainname internet.dbnet.hef.dk<
> http://internet.dbnet.hef.dk>
> OPTION: 3 ( 4) Routers 89.x.x.254
> OPTION: 6 ( 8) DNS server 82.x.x.20,82.x.x.20
> ---------------------------------------------------------------------------
> ---
> _______________________________________________
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