From: David Miller <davem@davemloft.net>
To: mmanning@brocade.com
Cc: netdev@vger.kernel.org
Subject: Re: [PATCH v2] net: ipv6: Always leave anycast and multicast groups on link down
Date: Mon, 25 Jul 2016 11:17:00 -0700 (PDT) [thread overview]
Message-ID: <20160725.111700.850560273619896723.davem@davemloft.net> (raw)
In-Reply-To: <1469208731-1085-1-git-send-email-mmanning@brocade.com>
From: Mike Manning <mmanning@brocade.com>
Date: Fri, 22 Jul 2016 18:32:11 +0100
> Default kernel behavior is to delete IPv6 addresses on link
> down, which entails deletion of the multicast and the
> subnet-router anycast addresses. These deletions do not
> happen with sysctl setting to keep global IPv6 addresses on
> link down, so every link down/up causes an increment of the
> anycast and multicast refcounts. These bogus refcounts may
> stop these addrs from being removed on subsequent calls to
> delete them. The solution is to leave the groups for the
> multicast and subnet anycast on link down for the callflow
> when global IPv6 addresses are kept.
>
> Fixes: f1705ec197e7 ("net: ipv6: Make address flushing on ifdown optional")
> Signed-off-by: Mike Manning <mmanning@brocade.com>
Applied and queued up for -stable, thanks.
prev parent reply other threads:[~2016-07-25 18:17 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-22 17:32 [PATCH v2] net: ipv6: Always leave anycast and multicast groups on link down Mike Manning
2016-07-22 17:37 ` David Ahern
2016-07-25 18:17 ` David Miller [this message]
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