[MBONED] ipv4 multicast address ranges, actual usage.

[Dave Taht <[e-mail]>]

As a few people know I've been working (quixotically) in my spare time
towards making more of the IPv4 address space generally usable. We've
landed patches for 0/8 in linux, and 240/4 had already been mostly
made working a decade back.

Now we come against a harder problem, in that 1) - a vast swath of
multicast address space was never allocated for anything by iana
(225/8-231/8) and 2) 232/8-238/8 appears severely underutilized. Only
portions of 224/8 and 239/8 seem to have any usage at all.

We've successfully made that first formerly multicast range pretty
generally usable in a string of patches on our github for various oses
and routing daemons. https://github.com/dtaht/unicast-extensions - and
for a drafty draft of a draft internet draft, see:
https://github.com/dtaht/unicast-extensions/blob/master/rfcs/draft-gilmore-taht-v4uniext.txt

My question today, though (lacking finding a mailing list more
suitable than this - is there one?), is to what extent are the various
allocations in the 232/8 to 238/8 range actually used today, and for
what?


-- 
Make Music, Not War

Dave Täht
CTO, TekLibre, LLC
http://www.teklibre.com
Tel: [phone]