Re: [Anima] I-D Action: draft-richardson-anima-ipv6-lldp-02.txt

Finally got around to reading this...

1. As I understand it, LLDP has its own Ethertype (0x88cc). It's probably useful to mention that, since it makes things a bit clearer for the reader.

2. Also as I understand it, LLDP packets are "typically" multicast, which is fine since it's a requirement for the GRASP DULL instance to work. Is it expected that IPv6-over-LLDP would also use unicast? There's a chunk of typical "IPv6-over-foo" stuff lacking. OK, some of it presumably says "SLAAC not supported except for LL address formation.", etc., but it needs to be there.

3. Personally I'd go for the "elided IPv6 packet" option. BTW you don't need all 128 bits in the addresses; even 64 bits is overkill. Or put no addresses at all, and rely on the MAC address plus the LL prefix. Also you don't need the version number or traffic class. (Of course, there's a draft for that: https://tools.ietf.org/html/draft-jiang-asymmetric-ipv6.) 

Regards
   Brian

On 19-Dec-19 06:03, internet-drafts@ietf.org wrote:
> 
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
> 
> 
>         Title           : IPv6 over Link-Local Discovery Protocol
>         Author          : Michael Richardson
> 	Filename        : draft-richardson-anima-ipv6-lldp-02.txt
> 	Pages           : 6
> 	Date            : 2019-12-18
> 
> Abstract:
>    This document describes a mechanism to encapsulate IPv6 packets over
>    the Link-Local Discovery Protocol (LLDP).  The LLDP is a single
>    layer-two protocol and is never forwarded, which is a desireable
>    property when building the IPv6-over-IPsec-over-IPv6-Link-Local
>    tunnels that make up the ANIMA Autonomic Control Plane (ACP).
> 
>    This unorthodox encapsulation avoids unwanted interactions between
>    the ACP packets and native packet forwarding engines, as well as
>    being safe for layer-2 switches which might otherwise have no IPv6
>    capabilities.
> 
> 
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-richardson-anima-ipv6-lldp/
> 
> There are also htmlized versions available at:
> https://tools.ietf.org/html/draft-richardson-anima-ipv6-lldp-02
> https://datatracker.ietf.org/doc/html/draft-richardson-anima-ipv6-lldp-02
> 
> A diff from the previous version is available at:
> https://www.ietf.org/rfcdiff?url2=draft-richardson-anima-ipv6-lldp-02
> 
> 
> Please note that it may take a couple of minutes from the time of submission
> until the htmlized version and diff are available at tools.ietf.org.
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
> 
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