Re: [dhcwg] Some comments regarding draft-ietf-dhc-dhcpv6-unknown-msg-01

One example was the text about standards compliant server not sending msgs.

I really think keeping it much simpler to say a relay that receives a msg that is not a relay-forw, relay-reply, or other message explicitly intended to be processed by the relay as per some RFC should forward the message in a Relay-Forw.

Future documents may define messages that a relay must process (rather than forwarding), though existing relays will forward these until updated. Servers must drop packets that they are not to process.

That's about it.

- Bernie (from iPhone)

On Jul 29, 2013, at 11:03 AM, "Qi Sun" <sunqi.csnet.thu@gmail.com<mailto:sunqi.csnet.thu@gmail.com>> wrote:

Hi Bernie,

I wonder if reworking the draft a bit would be worthwhile. In some cases it makes statements that could be dangerous in the long run.

Would you please elaborate so that we could work on them?

Best Regards,
Qi Sun

On 2013-7-29, at 上午10:32, Bernie Volz (volz) wrote:

I wonder if reworking the draft a bit would be worthwhile. In some cases it makes statements that could be dangerous in the long run.

The basic concept is that a received msg is either forwarded or consumed by relay.

If the message is a Relay-forw or Relay-Reply, RFC 3315 explains how to handle it.

If not one of these and not one to be consumed by relay (ie, Reconfigure-Reply), it should be forwarded (Relay-forw) unless policy disallows (ie, not client facing interface).

- Bernie (from iPhone)

On Jul 29, 2013, at 10:08 AM, "Qi Sun" <sunqi.csnet.thu@gmail.com<mailto:sunqi.csnet.thu@gmail.com>> wrote:

Hi Marcin ,

Thanks for the review!

It would be good to distinguish between the term "intended recipient" and "recipient". From the context I understand that the intended recipient is used with regards to the target for the message being passed through relays and the recipient is a term used to describe a host which is currently holding a message. Perhaps this clarification could be placed in the glossary or somewhere in the text?

Consider this:
"... the message is valid for constructing a new Relay-forward message if the recipient is a relay agent, the relay agent does not identify itself as the intended recipient, and the message is not a Relay-Reply message".

There is a mix-up of these two terms which may suggest that the message is sent to a wrong relay which is  not an "intended recipient", while the sentence is actually meant to tell that the relay is not a target for the message being encapsulated.

How about the following text:

"... the message is valid for constructing a new Relay-forward message if a relay agent receives the message, but the relay agent does not identify itself as the target of the message, and the message is not a Relay-Reply message."

Is the usage of 'target' here is precise?

Best Regards,
Qi

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