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From: "Grant Peel" <gpeel@thenetnow.com>
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Date: Wed, 14 Sep 2005 12:00:12 -0400
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Subject: IPs , Netmasks and Broadcast.
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Hi All,

Now I am really confused.

Up until this morning I thought I had a good handle on when I need to use 
the real Netmask and Broadcast.

For example, If I have 3 servers, and my upline asigns me a block of 128 
addresses, for the first ip used (from this block) on each server, I would 
need to specify the IP, true netmask and a broadcase. Then, when using more 
IPs from that block, I would use a 255.255.255.255 netmask and a broadcast 
equal to the IP.

Today, I was in this exact position where I was tring to add an (the first 
one one THAT machine, from that block) IP from a block that is almost 
completely used up on another server, and the one I was adding it to would 
not take it. When I tried adding it with a 255.255.255.255 netmask, and a 
broadcast eaqual to the amount of IPs from that block - it worked.

this is on a FreeBSD 4.10 machine.

WHich way is correct for 4.7 and higher?

-Grant