Date: Thu, 22 Aug 2002 16:55:59 +0300 From: Giorgos Keramidas <keramida@ceid.upatras.gr> To: adrian kok <adriankok2000@yahoo.com.hk> Cc: freebsd-questions@FreeBSD.org Subject: Re: confusion about netmask Message-ID: <20020822135559.GD3414@hades.hell.gr> In-Reply-To: <20020822040145.62091.qmail@web21209.mail.yahoo.com> References: <20020822040145.62091.qmail@web21209.mail.yahoo.com>
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On 2002-08-22 12:01 +0000, adrian kok <adriankok2000@yahoo.com.hk> wrote:
> Hi all
>
> I read the handbook about netmask for virtual host
> It shows as follows
> Except the first one using 255.255.255.0
> the rest is using 255.255.255.255
These are aliases. The manpage of ifconfig contains a lot of
information on alias addresses. The description of "alias" in
the ifconfig(8) manpage states:
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 non-conflicting netmask must be given.
Usually 0xffffffff is most appropriate.
--
FreeBSD: The Power to Serve <> http://www.FreeBSD.org
FreeBSD 5.0-CURRENT #0: Wed Aug 21 22:08:19 EEST 2002
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