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Date:      Tue, 06 Aug 2002 03:05:29 -0400
From:      Brad Laue <brad@brad-x.com>
To:        freebsd-hackers@freebsd.org
Subject:   ifconfig alias and the 0xffffffff netmask
Message-ID:  <3D4F7539.2090201@brad-x.com>

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Minor question regarding this; to recap:

Creating an IP alias on the same subnet as the original seems under 
FreeBSD to require setting the netmask of the alias to 255.255.255.255, 
or at least a subnet of the original.

What impact, if any, will having a /32 netmask on an aliased IP have?

It seems inconsistent with networking practice regarding interface 
aliases, which typically view the aliased IP's simply as distinct hosts 
on the same physical network, allowing them to have the same netmask. 
This method is used with Cisco IOS and other Unix-like operating 
systems. Is it incorrect?

Brad

-- 
// -- http://www.BRAD-X.com/ -- //



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