IP Aliasing

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This page was last edited on 15 April 2013, at 04:58.

IP Aliasing is the process of adding additional IP addresses to a single network interface.

FreeBSD

Under FreeBSD, to add an additional IP address (10.1.1.2, with a netmask of 255.255.255.0) to re0, run:

ifconfig re0 10.1.1.2 netmask 255.255.255.255 alias

The changes above are not persistent and will not survive a reboot. Add the following to /etc/rc.conf to make it persistent:

ifconfig_re0_alias0="10.1.1.2 netmask 255.255.255.255 alias"