On 29 okt 2007, at 16:18, Elmar K. Bins wrote:
How much of the currently allocated IPv4 address space do you believe is unused?
About half the ~ 40 legacy /8 assignments don't show up in the routing table.
Which does not mean these networks are unused
I think "not present in the routing table" is a good working definiion of "unused". Is it reasonable for people to keep almost half a percent of the IPv4 address space for themselves just so they don't have to renumber into the space specifically set aside for this?
and/or reclaimable.
I don't think that is knowable until someone actually tries it. If a market does happen, it will be interesting to see how much of that "unreclaimable" address space appears on that market.
The negative consequences of trading address space outweigh the positive ones.
Trading address space is going to come, whether we like it or not.
Murder happens too, despite the fact that most of us don't like it. We do what we can to stop it, not because we think we can eradicate it, but because every incremental reduction is worthwhile.
If we can get people to use the white market instead of the black market, good.
Why?
Of course, if every DFZ-routing party cooperates with the RIRs and/or routing registries, black markets can be counteracted. But you tell me the odds of that happening ;)
Sometimes all it takes is a filter and some vision. Remember the Sprint prefix length filters?