On Mon, 04 May 2009 18:01:32 -0400, Jack Bates <jba...@brightok.net> wrote:
Given there is no CLASS, but just a separation of network and host, I'd
hate to compare it to classful routing. They probably would have been
happy with a /96 network except for stateless autoconfig, which is quite
nice for some stuff actually.
Ok, calling it "classful routing" might be a little melodramatic.
I would love to be able to set interfaces on my cisco hardware to /96's,
but it's not allowed. Autoconfig screws that up. Even if it's not used,
you're forced to live with it. Linux, BSD, etc. don't care. (and the
instant they do, I can remove that stupid code.)
I've not tried every vendor out there, but I've noticed some
implementations handle /127 just fine from a routing perspective.
So far, Cisco's gear is the only IPv6 routers I've messed with. And they
will not let you set an interface to anything smaller than a /64.
Loopbacks have slightly different rules, but in my case (IPv6 tunnels)
that fact hasn't proven very useful.
