Allowing CARP to use arbitrary OUI prefix and allocating block from FreeBSD's OUI space assignment for that

Bjoern A. Zeeb bzeeb-lists at
Thu May 8 10:28:26 UTC 2014

On 08 May 2014, at 09:50 , Eygene Ryabinkin <rea at> wrote:

>> Apart from that I thought the different version number was sufficient
> The thing is that both VRRP and CARP packets use MAC address (on
> Ethernet at least) that equals to 00:00:5e:00:01:$VRID.  So in case
> that $VRID is the same and VRRP and CARP admins aren't aware of each
> other, there will be MAC conflict, so L2 packets will be switched
> in a "funny" manner.

How’s that different routing guys running VRRP on the routers and
server guys running vrrp on the servers and conflicting on the ID?

It’s a management problem in the administrative broadcast domain
not a CARP vs. VRRP problem.

Bjoern A. Zeeb             "Come on. Learn, goddamn it.", WarGames, 1983

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