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Date:      Fri, 28 Dec 2018 18:39:25 +0000
From:      bugzilla-noreply@freebsd.org
To:        bugs@FreeBSD.org
Subject:   [Bug 234472] Missing outgoing CARP traffic on interface
Message-ID:  <bug-234472-227@https.bugs.freebsd.org/bugzilla/>

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=3D234472

            Bug ID: 234472
           Summary: Missing outgoing CARP traffic on interface
           Product: Base System
           Version: 11.2-RELEASE
          Hardware: Any
                OS: Any
            Status: New
          Severity: Affects Only Me
          Priority: ---
         Component: kern
          Assignee: bugs@FreeBSD.org
          Reporter: pgadmin@pse-consulting.de

For quite a while (I think it started with 10.x) I have a CARP problem with=
 a
pair of opnSense routers. No one could help over there, so I'm posting here.

The router pair was running for some years correctly with ~20 vifs on 4
interfaces. After an update (incl kernel), things went wrong: the backup
machine turned to CARP master on the wan interface ix4, other interfaces
remained backup, with the master machine having all interfaces as carp mast=
er.
The result wasn't healthy, no surprise.

Debugging using tcpdump, I found that the backup router didn't receive any =
carp
announcements on the wan interface, until I disabled the firewall (pfctl -d=
) on
the master (!) completely. Obviously, pf is filtering the outgoing carp tra=
ffic
on the master, but I couldn't find any configuration that would do so. Even=
 a=20
"pass out quick on ix4 proto carp from {any} to {any}" as first filter rule
didn't help.

Any helpful hints?

--=20
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