Re: Is it safe to use 240.0.0.0/4

Using CGNAT doesn't sound right either, although I haven't read the whole thing, but it seems reasonable to use that block for CGNAT only. https://tools.ietf.org/html/rfc1918 On Wed, Jun 17, 2015 at 4:13 PM, Tony Wicks <tony@wicks.co.nz> wrote:

Use 100.64.0.0/10, this is the CGNAT reserved range.I would most definitely not recommend 240.0.0.0

-----Original Message----- From: NANOG [mailto:nanog-bounces@nanog.org] On Behalf Of Luan Nguyen Sent: Thursday, 18 June 2015 9:07 a.m. To: nanog@nanog.org Subject: Is it safe to use 240.0.0.0/4

Is that safe to use internally? Anyone using it? Just for NATTING on Cisco gears...