[Kea-users] Can't create gitlab account

[Darren Ankney]

Hi Nathan,

I think, In this case,  "-o 82,1300"  will look like sub-option 19
with 0 length and no data at all.  This would make sense with 0
length, but Kea is expecting you to send some data, I think, which is
probably why it complained.  If you already have network activity with
this option 82 content, you can shortcut this process by capturing
packets as I said previously.  I will give a hypothetical as an
example, however.  Let us say you want to send the circuit id: VLAN12
as option 82 sub option 1 (circuit-id).  You would specify like so:

-o 82,0106564C414E3132

where:

01 = sub option 1
06 = 6 bytes length
564C414E3132 = VLAN12

This is exactly what would appear on the wire.

Thank you,
Darren Ankney

On Sat, Jul 19, 2025 at 12:59 PM Nathan Faulkner
<nathanfaulkner18 at gmail.com> wrote:
>
> The registration page mentioned that some domains were blocked and this list could be emailed to get one unblocked, though I don't know if that included individual addresses on a domain. If not, I'm not sure how someone would contribute without paying for an email address.
>
> For "-o 82,1300" the spec (https://www.rfc-editor.org/rfc/rfc8357.html#section-4.1) says the length is 0. When I tested some other values in place of 13 (don't remember which, I think some random higher value and 01) they didn't seem to have an issue with 0 length data.
>
> On Sat, Jul 19, 2025, 8:14 AM Darren Ankney <darren.ankney at gmail.com> wrote:
>>
>> Hi Nathan,
>>
>> I think the reason you had trouble setting up an account in Gitlab was
>> that you have an @gmail.com address.  There has been some lock-down
>> needed due to a large amount of spam.  If you have a business email,
>> you could probably use that.
>>
>> As far as: "-o 82,1300" not working, when sending option 82 data, you
>> have to actually specify the entire suboption (id+length+data) as
>> shown here: https://www.rfc-editor.org/rfc/rfc3046#section-2.0 It also
>> must be converted to hex as would appear in a DHCP packet.  perfdhcp
>> won't do any of this for you.  It will merely take what you provide,
>> compute a length , and send: 0x52<length><your data> (at least I think
>> that is correct).  The easiest thing to do would be to capture DHCP
>> traffic that already contains this option, open in wireshark, and copy
>> out the hex for the sub-option as a hex stream.  This should give you
>> exactly what you need to use on the command line.  For some tips
>> (though they are instructions for templates) see here:
>> https://kb.isc.org/docs/how-to-use-perfdhcp-benchmarking-tool
>>
>> Thank you,
>> Darren Ankney
>>
>> On Thu, Jul 17, 2025 at 9:33 PM Nathan Faulkner
>> <nathanfaulkner18 at gmail.com> wrote:
>> >
>> > I was trying to create an account to report a couple of kea issues, but I got an "Email is not allowed for sign-up." message.
>> >
>> > I'm running kea 2.6.2.
>> >
>> > Here are the issues I was planning to open:
>> >
>> > perfdhcp should specify the relay agent relay port sub option when a local port is specified.  Not sure how it'd work otherwise. https://gitlab.isc.org/isc-projects/kea/-/issues/663 looks to be a related issue.
>> > When sending the relay agent relay port sub option (by passing "-o 82,1300" to perfdhcp), the debug kea logs show the packet failing to parse for reason "OptionInt 19 truncated". (as a workaround, you can specify junk data "-o 82,13020000")
>> > It'd be nice if perfdhcp could specify multiple servers.  I was trying to test HA, and normally I'd use a relay server, but perfdhcp itself pretends to be a relay server, which causes conflicts.
>> >
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