[Bug 202548] update to net-mgmt/arpwatch to ignore VRRP/CARP traffic

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=202548

            Bug ID: 202548
           Summary: update to net-mgmt/arpwatch to ignore VRRP/CARP
                    traffic
           Product: Ports & Packages
           Version: Latest
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: Individual Port(s)
          Assignee: freebsd-ports-bugs at FreeBSD.org
          Reporter: paul at dokas.name

Created attachment 160178
  --> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=160178&action=edit
patch to net-mgmt/arpwatch

net-mgmt/arpwatch complains verbosely in the presence of machines that use
CARP:

2015-08-21T01:21:00+00:00 host.example.com arpwatch: ethernet mismatch
10.0.0.254 0:25:33:22:11:00 (0:0:5e:0:1:1)

I found an email from Jordan Gordeev from 2006 that contains a patch to silence
these messages:

  https://lists.freebsd.org/pipermail/freebsd-net/2006-November/012476.html

The attached file adds a build option called NOVRRP that causes arpwatch to
ignore MAC addresses that use the VRRP/CARP ethernet prefix.

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