Re: comments on draft-kohno-ipv6-prefixlen-p2p-00.txt

[Pekka Savola <[e-mail]>]

On Mon, 9 Nov 2009, JINMEI Tatuya / ???? wrote:
> I'm afraid "has not been implemented" is too strong.  In fact, we have
> "implemented" it in the KAME/BSD IPv6 stack in that we implemented
> special restrictions (at that time) on anycast addresses and had
> experimentally assigned subnet-router anycast addresses on PC-based
> IPv6 routers.  In general, it's difficult to declare something hasn't
> been implemented because it eliminates any minor implementation
> activity, which is almost impossible to prove.

I agree that the wording is a bit strong, and I'm ok with weakening 
it, but I've yet to see an implementation that enables it by default 
or even by an enable/disable configuration directive.

AFAIK, on KAME/BSD it's "implemented" in such a fashion that the 
operator must manually configure it with "ifconfig".  I wouldn't call 
that "implemented" myself. At least on my FreeBSD 7.2 router, subnet 
router anycast address isn't configured automatically and I don't even 
see system configuration parameters (e.g. in init scripts) which would 
change this.

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings