From owner-freebsd-questions  Wed Jun  7 10:57:16 2000
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Date: Wed, 07 Jun 2000 13:56:30 -0400
From: Nathan Vidican <webmaster@wmptl.com>
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To: Alex Kwan <alexkwan@pacific.net.hk>
Cc: questions@freebsd.org
Subject: Re: Question about man ifconfig
References: <000701bfd0a5$69e108c0$831e40ca@alexkwan>
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Alex Kwan wrote:
> 
> Hi!
> 
> I wanted to setup multi IP address on a ethernet interface,
> and the man ifconfig said:
> 
> "The following parameters may be set with ifconfig:
> 
> add       ............................
> 
> alias      ............................
>             If the address is on the same subnet as the first network
> address
>             for this interface, a netmask of 0xffffffff has to be specified.
> "
> 
> Why do I can't set the netmask as the normal 255.255.255.0 (for C class)
> and needed to set as 0xffffffff(255.255.255.255)?
> 
> Thanks
> 
> To Unsubscribe: send mail to majordomo@FreeBSD.org
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you can; the following will work:

ifconfig fxp0 inet 216.221.72.2 netmask 255.255.255.0 
ifconfig fxp0 inet 192.168.1.1 netmask 255.255.255.0 alias

or, as entered in /etc/rc.conf:

ifconfig_fxp0="inet 216.221.72.2 netmask 255.255.255.0"
ifconfig_fxp0_alias0="inet 192.168.1.1 netmask 255.255.255.0"

-- 
Nathan Vidican
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Windsor Match Plate & Tool Ltd.
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