[16195] in North American Network Operators' Group
Re: SMURF amplifier block list
daemon@ATHENA.MIT.EDU (Stephen Sprunk)
Tue Apr 14 18:52:41 1998
Date: Tue, 14 Apr 1998 15:29:51 -0500
From: Stephen Sprunk <sprunk@paranet.com>
To: Charley Kline <kline@uiuc.edu>
CC: Karl Denninger <karl@mcs.net>, nanog@merit.edu
Just because the host addresses are theoretically valid doesn't mean
that using them is a good idea. Those two addresses constitute less
than 1% of a network's addresses, and are very simple to configure out
of your DHCP servers, etc.
Again, the likelihood that these addresses will cause problems or
experience connectivity issues is a far greater concern than the gain of
less than 1% of usable address space.
Sorry Charley :)
Stephen
Charley Kline wrote:
>
> But subnets of class B's may be larger than /24 and have host numbers of
> .255 and .0 in them. That's true all over this campus.
>
> It may be reasonable to filter x.x.x.255 addresses from class C's or
> /24 blocks, but you cannot filter all addresses that end in .255 without
> filtering out a number of completely legitimate hosts.
>
--
Stephen Sprunk "Oops." Email: sprunk@paranet.com
Sprint Paranet -Albert Einstein ICBM: 33.00151N 96.82326W
