[Kea-users] Selecting subnet based on circuit-id (INTERNAL)

[Wlodek Wencel]

Hello,

thank you for using Kea! I have to point out that we didn't change 
license on flex id hook. Hook included into your config file is flex 
option hook which is completely different thing from flex id. And flex 
option is released in standard package.

Regards,

Wlodek Wencel

ISC QA engineer

On 15/12/2021 14:17, Weisteen Per wrote:
> I believe ISC has released the flex hook for KEA 2.0 in the standard package. At least the flex library is part of the installation under /usr/lib64/kea/hooks/
>
> And defining the library seems to give no error messages.
>
>             "library": "/usr/lib64/kea/hooks/libdhcp_flex_option.so",
>             "parameters": {
>                 "identifier-expression": "relay4[2].hex"
>             }
>
> Do I need to define circuit-id here under parameters?
>
> My challenge is also how to use circuit-id identifier correctly in a test under client-classes.
>
>
> ./PerW
>
>
> -----Original Message-----
> From: Allan M33 Access <allan at m33access.com>
> Sent: onsdag 15. desember 2021 12:47
> To: Weisteen Per <per.weisteen at telenor.no>
> Cc: kea-users at lists.isc.org
> Subject: Re: [Kea-users] Selecting subnet based on circuit-id (OPEN)
>
> The flexible identifier hook for kea will allow you to use the dhcp option 82 sub option 1 as an identifier for leases. The flex hook is part of the premium hook packages though, purchasable on Isc’s website. The package also comes with the legal logging hook.
>
> My setup has the same concept, for my VLANs I set them up as individual interfaces on my box, then I define those interfaces for each subnet in the configuration. I use the flex it to use the circuit id as an identifier with “replace-client-id”: true
>
> Even though the circuit id does have the VLAN in it, I choose subnets by the interface the packet comes in on instead.
>
> -Allan
>
>> On Dec 15, 2021, at 5:12 AM, Weisteen Per <per.weisteen at telenor.no> wrote:
>>
>> Hi
>>
>> I've just set up KEA 2.0 on a RHEL 8 box using RedHat Repository setup as instructed at cloudsmith.io.
>> Seems that the packages available for me now is kea.x86_64, kea-devel.x86_64, kea-hooks.x86_64 and kea-libs.x86_64 all of which I have installed.
>>
>> Seems though I'm missing some libraries mentioned in the kea-dhcp4.conf file like libdhcp_legal_log.so and control-agent-commands.so but I assume they're not critical.
>>
>> What I initially need is to be able to select beween subnets based on which VLAN/VPN the request comes from. My network guys has set up several Cisco routers which will assign clients to one specific VLAN/VPN if the client manages to authenticate using 802.1x and to another if the authentication fails. Am I correct to believe that Cisco router will supply me with information on which VLAN/VPN a client was assigned to using circuit-id?  Is this a parameter already predefined in KEA or do I have to define it somewhere?
>>
>> Thanks,
>>
>>
>> ./PerW
>>
>>
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