Shim6, was: Re: filtering /48 is going to be necessary

Leo Bicknell bicknell at
Mon Mar 12 10:31:55 CDT 2012

In a message written on Mon, Mar 12, 2012 at 11:07:54AM -0400, Robert E. Seastrom wrote:
> Grass-roots, bottom-up policy process
> +
> Need for multihoming
> +
> Got tired of waiting
> =
> IPv6 PI

I'll also add that Shim6 folks never made a good economic argument.
It's true that having routes in the DFZ costs money, and that
reducing the number of routes will save the industry money in router
upgrades and such to handle more routes.  However, it's also true
that deploying SHIM6 (or similar solutions) also has a cost in
rewritten software, traning for network engineers and administrators,
and so on.

It was never clear to me that even if it worked 100% as advertised that
it would be cheaper / better in the global sense.

       Leo Bicknell - bicknell at - CCIE 3440
        PGP keys at
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Type: application/pgp-signature
Size: 826 bytes
Desc: not available
URL: <>

More information about the NANOG mailing list