[Kea-users] KEA support for option 150 (tftp-server-ip)

[Maria Hrabosova]

Hi,

I don't fully agree that option 150 can be anything. It is a standard 
DHCP option defined in https://www.rfc-editor.org/rfc/rfc5859.html and, 
as Veronique said, it's also recognized by ISC DHCP 
(https://kb.isc.org/v1/docs/isc-dhcp-44-manual-pages-dhcp-options#standard-dhcpv4-options). 
That's why we would expect it to be recognized by Kea as well without 
the need to define it ourselves (as we do now).

Cheers,

Maria

On 11.01.22 10:29, Gordon Ross wrote:
>
> Option 150 can be anything so you have to define it yourself.
>
> //Define some custom options
>
>     "option-def": [
>
>     //Option for Cisco IP Phones to find CUCM.
>
>     {
>
>         "name": "cisco-cucm-servers",
>
>         "code": 150,
>
>         "type": "ipv4-address",
>
>         "array": true
>
>     }
>
> ]
>
> *From: *Kea-users <kea-users-bounces at lists.isc.org> on behalf of 
> Veronique Lefebure <veronique.lefebure at cern.ch>
> *Date: *Tuesday, 11 January 2022 at 09:25
> *To: *Kea-users at lists.isc.org <Kea-users at lists.isc.org>
> *Subject: *[Kea-users] KEA support for option 150 (tftp-server-ip)
>
> Hello,
>
> In ISC DHCP v4.4.2 we have 
> (https://downloads.isc.org/isc/dhcp/4.4.2/dhcp-4.4.2-RELNOTES 
> <https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fdownloads.isc.org%2Fisc%2Fdhcp%2F4.4.2%2Fdhcp-4.4.2-RELNOTES&data=04%7C01%7Cgr306%40universityofcambridgecloud.onmicrosoft.com%7C3bf0cfae0b6e4bed9d9008d9d4e3efb1%7C49a50445bdfa4b79ade3547b4f3986e9%7C0%7C0%7C637774899185495933%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C2000&sdata=vlNzPfz5%2B0C0vFxsPpCtcNTWNv9SMiiEoEPUqD0KmKM%3D&reserved=0>) 
> :
>
> Support for sending and receiving additional DHCP4 options has been 
> added to both the dhcpd and dhclient. Specifically: option codes 
> 93,94, and 97 (RFC 4578); code 150 (RFC 5859); and codes 209,219, and 
> 211 (RFC 5071). Beyond configuring, sending, requesting, and receiving 
> these options neither server nor client apply any additional logic 
> based on their values. Thanks to Peter Lewis for requesting this 
> change. [ISC-Bugs 47062]
>
> In KEA, it seems that option 150 is not support.
>
> We get this error:
>
>  [Validation] Error encountered: definition for the option 
> 'dhcp4.tftp-server-ip' having code '0' does not exist
>
> Is there a solution or do we have to define that option ourselves?
>
> Thanks,
>
> Veronique
>
>
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