The following parameters are specific to

.Xr carp 4

interfaces:

.Bl -tag -width indent

.It Cm advbase Ar seconds

Specifies the base of the advertisement interval in seconds.

The acceptable values are 1 to 255.

The default value is 1.

.\" The default value is CARP_DFLTINTV.

.It Cm advskew Ar interval

Specifies the skew to add to the base advertisement interval to

make one host advertise slower than another host.

It is specified in 1/256 of seconds.

The acceptable values are 1 to 254.

The default value is 0.

.It Cm pass Ar phrase

Set the authentication key to

.Ar phrase .

.It Cm vhid Ar n

Set the virtual host ID.

This is a required setting.

Acceptable values are 1 to 255.

.El

.Pp