>> David Conrad wrote: >> As far as I'm aware, pretty much every version of every >> operating system out there (including Windows, MacOSX, >> Linux, etc) doesn't allow configuring 240/4. Including IOS too (at least the last time I have checked). > Stephen Gill wrote: > That being the case it's certainly thornier than I anticipated. Also, please keep in mind that vendors are not charities, they will likely not release the new code for older platforms, and I would hate a proposal to use 240/4 (regardless if it's for public or private addresses) to become a de-facto excuse for "you have to upgrade to the latest OS" or "you have to upgrade to the latest router", or both. Michel.