[Kea-users] DHCP options order incompatibility

Joelson Vendramin jtvendramin at yahoo.com.br
Thu Jul 6 11:09:07 UTC 2017


Hi Steve,
Just curiosity:What's your switch brand/model?
Thanks,--Joelson Vendramin

      De: Steve Teusch <steve.teusch at rtr.guru>
 Para: Francis Dupont <fdupont at isc.org> 
Cc: "kea-users at lists.isc.org" <kea-users at lists.isc.org>
 Enviadas: Quarta-feira, 5 de Julho de 2017 9:24
 Assunto: Re: [Kea-users] DHCP options order incompatibility
   
Thank you very much for that.  I will implement my order with a hook for now and see if the switch manufacturer will patch this switch.

-----Original Message-----
From: Francis Dupont [mailto:fdupont at isc.org] 
Sent: Wednesday, July 5, 2017 9:02 PM
To: Steve Teusch <steve.teusch at rtr.guru>
Cc: kea-users at lists.isc.org
Subject: Re: [Kea-users] DHCP options order incompatibility

Steve Teusch writes:
> Any comments?

=> fix the client (or the entity which does not support any order for DHCP options) as it is clearly not RFC compliant.
 BTW the option 82 RAI has a SHOULD to be last, and END/255 must be the very last one possibly followed by PAD/0 simply because anything after is ignored... So there is *nothing* else in RFCs about option order and as far as I know it is at implementor choice (which is different for ISC DHCP and Kea BTW).

Thanks

Francis Dupont <fdupont at isc.org>

PS: you can use a hook to pack options in your prefer order.
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