Re: Redeploying most of 127/8, 0/8, 240/4 and *.0 as unicast

[Jared Mauch <jared () puck nether net>]

> On Nov 18, 2021, at 4:31 PM, Randy Bush <randy () psg com> wrote:
>
> as a measurement kinda person, i wonder if anyone has looked at how much
> progress has been made on getting hard coded dependencies on D, E, 127,
> ... out of the firmware in all networked devices.


At least the E space is largely usable last I checked (eg: IOS-XR, JunOS).  You can even measure traceroutes that have 
the class-e space in them from some cloud providers if your network and the intermediaries don’t do u-rpf as well.

Most OS’es (MacOS, Linux, various *BSD) also permit this as well.  My understanding is that the RedmondOS may not 
handle this, but if you need to number your infrastructure these addresses may work well.

- Jared