Class E addresses in the wild

Fri Mar 22 17:55:40 UTC 2013

Fiserv uses this address space for their ATM network.

On Fri, Mar 22, 2013 at 9:39 AM, Buz Dale <buzdale at gmail.com> wrote:

> It's in our Martians ACL but we left it off of a couple of new border
> connections and saw a good bit of it forwarded to us since Wednesday from
> multiple ISPs.
> Fixed now but still curious.
> Thanks,
> Buz
>
>
> On Thu, Mar 21, 2013 at 9:19 PM, George Herbert <george.herbert at gmail.com
> >wrote:
>
> > On Thu, Mar 21, 2013 at 5:10 PM, cb.list6 <cb.list6 at gmail.com> wrote:
> > > I am pretty sure Class E is completely defunct and not used anywhere
> > > since Cisco and Juniper routers do not forward the packets (circa 2008
> > > testing) and no known host accept it as a valid address, AFAIK.
> >
> > Both the net and host sides of this are trivially repairable problems,
> > even for crazy cellphone network operators.  As long as you have host
> > source code and a network vendor you can demand custom patches
> > from....
> >
> >
> > --
> > -george william herbert
> > george.herbert at gmail.com
> >
>
>
>
> --
> Buz Dale
> buzdale at gmail.com
> GMT -5
> --
>