Subject: [Idr] flow-spec rule ordering - WG LC

From: Yakov Rekhter <[email-masked]>
Date: Tue, 21 Apr 2009 13:44:13 -0700

Folks,

This is to complete the IDR WG Last Call on the cnages made
to the flowspec draft (07 version). We received no objections
to the changes.

Yakov.
------- Forwarded Message

Date:    Mon, 06 Apr 2009 11:05:15 -0700
From:    Yakov Rekhter <[email-masked]>
To:      [email-masked]
Subject: [Idr] flow-spec rule ordering

Folks,

This is to start the IDR WG Last Call on the changes made
to the flowspec draft (07 version), as described below.

Note that the scope of this Last Call is limited to just
these changes, and *nothing else*.

This Last Call ends April 20, 2009.

Yakov.
- ------- Forwarded Message

Date:    Mon, 06 Apr 2009 10:58:13 -0700
From:    Pedro Marques <[email-masked]>
To:      <[email-masked]>
Subject: [Idr] flow-spec rule ordering

The more recent draft (07) has a change in the rule ordering text.  
Given that the document has passed last call the chairs and IESG  
believe that there should be last call on this specific change.

Before

The previous text implied that on when applying filters, least  
specific destination IP addresses in destination and source prefix  
would have priority.

The most recent document:

- - - More specific IP destination/source prefixes have priority.

e.g. If the following rules are present

rule 1
	destination prefix 10.0.1/24

rule 2
	destination prefix 10.0.1.1/32

rule 3
	destination prefix 10.0.1/24
	source prefix 20.0/16

rule 4
	destination prefix 10.0.1/24
	source prefix 20.0.1/24

With the previous text the order of rules would be:
[1, 2, 3, 4]

With the 07 text the order is:
[2, 4, 3, 1]

Please look at the complete text in the document and raise any  
concerns that you may have.

thanks,
   Pedro.
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