Re: [PATCH] nfs: Fix misparsing of nfsv4 fs_locations attribute

["J. Bruce Fields" <bfields@fieldses.org>]

On Wed, Aug 20, 2008 at 06:07:50PM -0400, Chuck Lever wrote:
> What may be confusing you is that scope delimiters are used almost
> exclusively for link-local addresses, which are valid only on the
> local host.
> 
> If you don't want to handle a referral that uses a link-local address,
> or you don't want to handle a link-local address with a scope ID, then
> there are explicit checks you can do.

Well, the current code does allow a referral to point to 127.0.0.1.  I
don't know what to think of that; it seems unlikely to be useful for
anything but testing, and possibly succeptible to abuse, but of course
the protocol doesn't forbid it.

I google around a bit, but still don't get the scope stuff.  Are they
really part of an "ipv6 address"?  I thought an ipv6 address was just a
128-bit number?  (Or do they just give another way of writing something
that you could already write without the %?)

--b.