[dnssd] multicast over wireless links

[RJ Atkinson <[e-mail]>]

All,

While IEEE 802.11 has known specific issues with IP multicasting,
most radio links (including SATCOM) actually are natively
broadcast links, hence perform multicasting efficiently.

As an example, for my clients with IP/VSAT deployments or 
other IP/RF deployments (for RF != 802.11), multicast is 
the MOST EFFICIENT way to communicate and unicast is the 
LEAST EFFICIENT way to communicate.

As I've said in other IETF working groups, it would be a 
mistake to optimise an upper-layer protocol for a specific 
link-technology.  Instead, folks ought to engage with 
IEEE 802.11 to help them find ways to more effectively
support IP multicast traffic.

So I object to any proposal to "optimise" DNS-SD for 802.11,
because the issues with 802.11 are unique to the design of
its MAC/LLC layer protocols.

Yours,

Ran Atkinson