Hi, I have a concrete question and a general comment with regards to this. The concrete question is illustrated by an example: o Assume I'm a transit service provider with my own AS o Assume that I only sell "wholesale" service to a smaller number of customers o Assume that I want to provide IPv6 service o Assume that all my customers have their own IPv6 address allocations Now, where does that leave me in terms of getting IPv6 addresses assigned to number my internal network and the few internal servers we have? The way I read the draft policy, the answer would be "out in the cold". One possible way out would be to get an e.g. /48 assignment from one of the downstreams, which address-space-wise would be sufficient to number this network. However, there is no guarantee that the route for the /48 would not be filtered away "all over the place" (I would guess that it *would* be filtered away). The result would be that if the connection to the downstream which announces the enclosing /32 goes away, so does the general connectivity to the systems in my own AS. Another option could be to get an address assignment from one of my upstreams. However, again, my general connectivity would be married with that provider's connectivity (do to assumed filtering of /48 routes), so does not prove to be useful in a setup with more than one "upstream" provider; if the connectivity with that provider was broken, so would my general connectivity be, even though I have physical connectivity via my other upstream(s). My baggage is from IPv4, so I may have missed a few details (corrections appreciated), but it seems to me that the attempt of imposing a strict hierarchical address allocation covering multiple routing domains can at best be characterized as an attempt at putting a band-aid across the gaping chest-wound called "IPv6 multihoming", by in essence telling people "don't do that!" and also "you do not have routing-wise autonomy (or visibility) even though you have an AS". The draft policy says that "routability" is not guaranteed for any assignment or allocation, and the policies as to what is commonly filtered and what isn't are not yet defined (I think), but how many think /48s will be universally accepted? (I certainly don't.) Regards, - Håvard