Date: Wed, 28 Nov 2001 23:52:08 -0800 From: "Crist J. Clark" <cristjc@earthlink.net> To: justin@mac.com Cc: freebsd-net@FreeBSD.ORG Subject: Re: netmask for aliased ip Message-ID: <20011128235208.O3985@blossom.cjclark.org> In-Reply-To: <BDF9EC80-E491-11D5-A7BB-0003934474AC@mac.com>; from justin@mac.com on Wed, Nov 28, 2001 at 10:24:28PM -0800 References: <20011128170815.G3985@blossom.cjclark.org> <BDF9EC80-E491-11D5-A7BB-0003934474AC@mac.com>
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On Wed, Nov 28, 2001 at 10:24:28PM -0800, justin@mac.com wrote:
> FWIW, the FreeBSD FAQ (10.9) sez this (it's a one-liner that shows the
> netmask 0xffffffff).
I'll send in a doc PR for this. The ifconfig(8) page gets it right.
alias Establish an additional network address for this interface. This
is sometimes useful when changing network numbers, and one wishes
to accept packets addressed to the old interface. If the address
is on the same subnet as the first network address for this
interface, a netmask of 0xffffffff has to be specified.
--
Crist J. Clark | cjclark@alum.mit.edu
| cjclark@jhu.edu
http://people.freebsd.org/~cjc/ | cjc@freebsd.org
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