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Re: Issues encountered with assigning .0 and .255 as usable addresses?


From: Dan White <dwhite () olp net>
Date: Mon, 22 Oct 2012 17:22:31 -0500

On 10/22/12 17:18 -0500, Matt Buford wrote:
On Mon, Oct 22, 2012 at 5:07 PM, Paul Zugnoni <paul.zugnoni () jivesoftware com
wrote:

Any experience or recommendations? Besides replace the ISA proxy…. Since
it's not mine to replace. Also curious whether there's an RFC recommending
against the use of .0 or .255 addresses for this reason.


Way back in the late 90's I tried this with a /23 dialup DHCP pool and
quickly found that the .0 and .255 users couldn't get to some scattered web
sites, though they seemed to be able to get to most of the Internet.

However, a year or so ago I spun up an always-on Amazon ec2 instance with a
static IP and was handed a .0 address.  I still use this VM regularly and
have not run into any problems with reachability for this address.

I had a similar experience about 10 years ago, with DSL customers who had
been assigned .0 or .255 addresses not able to reach some sites.

--
Dan White


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