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 <nathanfaulkne...@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.ank...@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 >> <nathanfaulkne...@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. >> > >> > -- >> > ISC funds the development of this software with paid support >> > subscriptions. Contact us at https://www.isc.org/contact/ for more >> > information. >> > >> > To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users. >> > >> > Kea-users mailing list >> > Kea-users@lists.isc.org >> > https://lists.isc.org/mailman/listinfo/kea-users >> -- >> ISC funds the development of this software with paid support subscriptions. >> Contact us at https://www.isc.org/contact/ for more information. >> >> To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users. >> >> Kea-users mailing list >> Kea-users@lists.isc.org >> https://lists.isc.org/mailman/listinfo/kea-users > > -- > ISC funds the development of this software with paid support subscriptions. > Contact us at https://www.isc.org/contact/ for more information. > > To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users. > > Kea-users mailing list > Kea-users@lists.isc.org > https://lists.isc.org/mailman/listinfo/kea-users -- ISC funds the development of this software with paid support subscriptions. Contact us at https://www.isc.org/contact/ for more information. To unsubscribe visit https://lists.isc.org/mailman/listinfo/kea-users. Kea-users mailing list Kea-users@lists.isc.org https://lists.isc.org/mailman/listinfo/kea-users
