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From: Oleg Ginzburg <olevole@olevole.ru>
To: freebsd-net@freebsd.org
Subject: SIOCSVH, SIOCGVH ioctl(2) and virtio ethernet driver
Date: Fri, 26 Dec 2014 17:09:56 +0300
Message-ID: <36413168.TE9MLvZCzL@kde4.my.domain>
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Cc: Bryan Venteicher <bryanv@freebsd.org>
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is it possible to use the carp(4) protocol with 
vtnet(4) interfaces ( which is used, for example, in bhyve(8) )
Currently, the standard carp init operation causes an SIOCGVH error:

/sbin/ifconfig vtnet0 vhid 1 advskew 100 pass pass 10.10.10.10/24 alias
ifconfig: SIOCGVH: Protocol not supported