[6bone] Is minimum allocation /64 now?

[Pekka Savola]

On Fri, 24 Oct 2003, Jesper Skriver wrote:
> > 3ffe:ffff:ffff::f01:{1,2}/126
> 
> But using a non /126 or /127 on a p2p link can result in a forwarding
> loop, assume the the 2 routers have :1 and :2, and someone sends traffic
> to :3, if the netmask is larger than /126, the routers will do a longest
> match lookup, will find the interface prefix, and send the packet on the
> p2p interface - unless they have a specific check to drop these packets.

This can only be _theoretically_ avoided by the use of a /127 or two 
/128's (or just leaving out the address altogether).  /126 is equally 
affected, as IPv6 does not have the broadcast address; /126 is not a 
equivalent to IPv4 /30.

Whether the implementations check these things is another matter..

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