[Sunhelp] Adding alias IP addresses to a NIC
steve.kennedy at innovation.siemens.ca
Tue Feb 22 13:40:20 CST 2000
Would it be possible to use DHCP with an aliased interface? (ie, hme0:1) and
is it possible for other machines to indentify which machines are
From: Dale Ghent [mailto:daleg at elemental.org]
Sent: Tuesday, February 22, 2000 12:36 PM
To: 'sunhelp at sunhelp.org'
Subject: Re: [Sunhelp] Adding alias IP addresses to a NIC
On Tue, 22 Feb 2000, Pearson, David wrote:
| Can someone tell me a little about how an alias IP address works and how
| I set one up?
IP aliasing is giving an interface (le0, hme0, ge0, etc) more than one IP
address. They're more like sub-interfaces. For example:
hme0 has the main IP of that interface.
hme0:1 is the first IP alias
hme0:2 is the second
and so on.
you can configure an alias on a running interface with the command:
ifconfig <interface>:<alias number> <ip address> up
ifconfig hme0:1 18.104.22.168 up
To make the alias reappear after a reboot, make a file in /etc named
"hostname.<interface>:<alias number>" (ex: "hostname.hme0:1") that
contains the IP address of that alias (or, just the hostname of that
alias, and put the IP in /etc/hosts)
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