When a failure occurs, the backup server will pick up the failed master machine's IP address.
[[carp-10x]]
-=== Using CARP on FreeBSD 10 and Later
+=== Using CARP
Enable boot-time support for CARP by adding an entry for the [.filename]#carp.ko# kernel module in [.filename]#/boot/loader.conf#:
@@ -2299,89 +2299,6 @@
CARP functionality can be controlled via several man:sysctl[8] variables documented in the man:carp[4] manual pages.
Other actions can be triggered from CARP events by using man:devd[8].
-[[carp-9x]]
-=== Using CARP on FreeBSD 9 and Earlier
-
-The configuration for these versions of FreeBSD is similar to the one described in the previous section, except that a CARP device must first be created and referred to in the configuration.
-
-Enable boot-time support for CARP by loading the [.filename]#if_carp.ko# kernel module in [.filename]#/boot/loader.conf#:
-
-[.programlisting]
-....
-if_carp_load="YES"
-....
-
-To load the module now without rebooting:
-
-[source,shell]
-....
-# kldload carp
-....
-
-For users who prefer to use a custom kernel, include the following line in the custom kernel configuration file and compile the kernel as described in crossref:kernelconfig[kernelconfig,Configuring the FreeBSD Kernel]:
-
-[.programlisting]
-....
-device carp
-....
-
-Next, on each host, create a CARP device:
-
-[source,shell]
-....
-# ifconfig carp0 create
-....
-
-Set the hostname, management IP address, the shared IP address, and VHID by adding the required lines to [.filename]#/etc/rc.conf#.
-Since a virtual CARP device is used instead of an alias, the actual subnet mask of `/24` is used instead of `/32`.