On Tue, Feb 1, 2011 at 12:00 AM, Martin Millnert <millnert at gmail.com> wrote: > Neither Linux 2.6.37 nor Windows 7 accepts it Oops, I was clumpsy there, apologies. When I was testing this, I messed up one of my hosts :/ It seems 240/4 *does* work as unicast v4 in Linux 2.6.37. Then it's easy, just convert everything to Linux. ;) /M