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Date: Fri, 24 Apr 2015 16:15:06 +0700
From: Eugene Grosbein <eugen@grosbein.net>
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To: Aristedes Maniatis <ari@ish.com.au>, freebsd-net@freebsd.org
CC: Freddie Cash <fjwcash@gmail.com>
Subject: Re: CARP vhid: across interfaces?
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On 01.01.2015 18:29, Aristedes Maniatis wrote:

> At any rate what does "interface groups that the carp(4) interface is a member of" mean?

FreeBSD has interface groups. Any interface may be a member of one or multiple groups,
you can manually insert interface into a group, list groups etc. See man ifconfig.