Re: [dhcwg] RFC3315 DECLINE definition

[Simon Hobson <[e-mail]>]

"Mudric, Dusan (Dusan)" <[e-mail]> wrote:

> Please see inlined

If you learned the basics of how to quote stuff properly you wouldn't need to say that ! Bottom quoting is really quite easy if you try ;-)

>> You need to be clear on what you mean by "address validation".  (Oh, and DHCPv6 is responsible for both address and prefix assignment)
>  
>  - Syntax checks

What sort of syntax checks ? Apart from custom options, there's very little an admin can do to cause the server to send packets that aren't syntactically correct. So in most cases, for there to be a syntax issue, it would indicate a programming error - ie a bug in rhw software.
There are far more useful ways to detect that than complicating the protocol.

>  - Semantic checks

Ditto ?

>  - Prefix checks

How ? Do you propose to equip the client with ESP as to the network admin's intent ?


> > - Why is the human intervention a part of the protocol? Why the
> > protocol requires an administrator not to make mistakes?

There is a limit to how far you can, or should, take that. The logical endpoint of that is that "things" come preconfigured with a restricted set of option that the vendor envisaged you might want to use - more reliable, less scope for admin errors. Personally I find such systems a right PITA when they make simple things easy but advanced things impossible.


> What if the router advertised a prefix and the client received an address that does not start with the prefix?

That's not an invalid configuration is it ?