/27 the new /24

William Herrin bill at herrin.us
Fri Oct 2 16:34:27 UTC 2015

On Fri, Oct 2, 2015 at 11:55 AM, Suresh Ramasubramanian
<ops.lists at gmail.com> wrote:
> Besides which more than one provider filters by a minimum prefix length
> per /8 - wasn't  Swisscom or someone similar doing that?  So multi
> homing with even a /24 is somewhat patchy in terms of effectiveness

Hi Suresh,

That hasn't been true for something like a decade. Anybody who filters
anything shorter than /24 without also taking a default route (or the
equivalent) is not fully connected to the Internet.

Bill Herrin

William Herrin ................ herrin at dirtside.com  bill at herrin.us
Owner, Dirtside Systems ......... Web: <http://www.dirtside.com/>

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