rfc4007 implementation question

Toerless Eckert <tte@cs.fau.de> Sun, 17 December 2017 10:38 UTC

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Date: Sun, 17 Dec 2017 11:38:17 +0100
From: Toerless Eckert <tte@cs.fau.de>
To: ipv6@ietf.org
Subject: rfc4007 implementation question
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Figure 1 of RFC4007 shows an example where a single link2 is
attached to two interfaces - interface2, interface3. This is
the one case we interface zones are different from link zones.

Are there any implementations that suport this model directly ?
Aka: Where a zone_id for the link scope would have no 1:1 equivalent
interface id (or name) ? 

The implementations i have seen to support this case  are all based on the 
creation of some virtual interface, then map the two underlying (physical)
interfaces into it, and then the interface id of that virtual interface
would map 1:1 to the link scope zone_id. And in result it seems
interface IDs are used interchangeably with link scope zone_ids...

Thanks
---
tte@cs.fau.de