Date: Wed, 26 Oct 2016 11:58:52 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 213804] [carp]: packets got processes on the BACKUP node under certain conditions Message-ID: <bug-213804-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=213804 Bug ID: 213804 Summary: [carp]: packets got processes on the BACKUP node under certain conditions Product: Base System Version: 10.3-STABLE Hardware: Any OS: Any Status: New Severity: Affects Only Me Priority: --- Component: kern Assignee: freebsd-bugs@FreeBSD.org Reporter: emz@norma.perm.ru Consider the following scheme: +-----------------+ iface1 | | iface2 +-------| host A (MASTER) |-------- | | | | +-----------------+ carp1 | +-----------------+ | | | iface2 +-------| host B (BACKUP) |-------- << packet to carp 1 IP iface1 | | +-----------------+ Lets assume both hosts are advertising themselves using rtadvd as ipv6 routers for network attached to the iface2. In this case, they both can receive ipv6 packets undercertain conditions, destined to the CARP address carp1. When a BACKUP node receives such packets, it processes them locally, regardless of the state of the CARP, as if it was MASTER. I observe this only on the ipv6, because the process of router advertising in ipv6 is different from ipv4. However, I suppose the same rule applies to the ipv4, but it's not that important, since I cannot imagine the configuration that would reproduce this for ipv4. -- You are receiving this mail because: You are the assignee for the bug.
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