Of possible interest to the homenet community, I think:

> From: Stuart Cheshire <chesh...@apple.com>
> Date: 10 October 2012 15:53:30 PDT
> To: IETF Discussion <i...@ietf.org>
> Subject: New mailing list for DNS-SD/mDNS Extensions
> list-id: IETF-Discussion <ietf.ietf.org>
> 
> A new IETF mailing list has been created for discussions regarding 
> DNS-SD/mDNS Extensions:
> 
> <https://www.ietf.org/mailman/listinfo/mdnsext>
> 
> This is in response to recent events in the industry and marketplace.
> 
> In August, EDUCAUSE delivered a petition to Apple asking for improvements to 
> Bonjour (aka DNS-SD/mDNS) to allow discovery of services beyond the local 
> link.
> 
> <http://www.networkworld.com/news/2012/080312-bonjour-petition-261390.html>
> <https://www.change.org/petitions/from-educause-higher-ed-wireless-networking-admin-group>
> <http://listserv.educause.edu/cgi-bin/wa.exe?A2=ind1208&L=WIRELESS-LAN&O=D&P=31656>
> 
> In principle DNS-SD can already be used in conjunction with conventional 
> unicast DNS to enable wide-area service discovery, but in practice this 
> capability is not widely used. This disconnect between customer needs and 
> current practice suggests that we need to revisit how to solve this problem.
> 
> In response to this customer demand, Aerohive, Aruba, Cisco, and Xirrus have 
> all recently announced "Bonjour gateway" products which allow service 
> discovery beyond the local link. However, these were brought to market 
> rapidly, and it's unclear whether they represent a desirable long-term 
> direction for service discovery protocol development. Other companies are 
> also reported to be developing their own "Bonjour gateway" products, not yet 
> announced.
> 
> It would be beneficial for the end users, network operators, these vendors, 
> and for the long-term health of the Internet to bring this work into the IETF 
> where all interested parties can collaborate on it.
> 
> Proposed Scope of Work:
> 
> The MDNSEXT mailing list discussions will focus on service discovery 
> solutions suitable for:
> 
> 1. Enterprise networks
> 2. Academic/Educational/University networks
> 3. Multi-link home networks, such as that envisaged by HOMENET*
> 4. Mesh networks, such as SE2.0/ZigBee/6lowpan-style networks
> 
> * It is hoped that MDNSEXT can develop a solution that is suitable for all 
> four network environments, including the HOMENET case. Of course the HOMENET 
> WG is free to evalulate for itself whether it wishes to adopt the MDNSEXT 
> solution, or develop something different.
> 
> Proposed Goals:
> 
> 1. Enable discovery of services across multiple links.
> 
> 2. Zero configuration operation possible, but not mandatory.
>   - i.e. Zero configuration operation is supported by the protocols,
>   but administrative control is also available on networks where that
>   is desired.
> 
> 3. Scalability, in terms of:
>   - Network traffic
>   - CPU and memory requirements on network entities
>   - User interface (huge flat list is not user friendly)
>   - Having a smooth continuum of operation from local link to site to
>     global, rather than wildly different incompatible modes of
>     operation at different network scales
>   - Granularity of services available on a server (extend the notion of 
> service?)
> 
> 4. Suitable for both local (zero-config) and global (configured) use
>   - i.e. Suitable out-of-the box defaults should enable zero-
>     configuration use on many small- to medium-sized networks, while still
>     allowing for administrative control in networks where that's desired.
> 
> 5. Incremental deployability
>   - Identify what changes to existing network elements will be
>     required, and attempt to minimize those changes.
>   - Don't break existing DNS-SD/mDNS functionality and devices
> 
> A BoF session is tentatively planned for 1520-1650 Tuesday 6th November 2012, 
> subject there being enough interest to warrant moving ahead to that stage.
> 
> Stuart Cheshire
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