netdev - Re: [PATCH] net: ipv6: fix __rt6_purge_dflt_routers when forwarding is not set on all ifaces

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Date:   Tue, 1 Sep 2020 08:57:53 -0600
From:   David Ahern <dsahern@...il.com>
To:     Eric Dumazet <edumazet@...gle.com>,
        Brian Vazquez <brianvv@...gle.com>
Cc:     Brian Vazquez <brianvv.kernel@...il.com>,
        "David S . Miller" <davem@...emloft.net>,
        LKML <linux-kernel@...r.kernel.org>,
        netdev <netdev@...r.kernel.org>,
        David Ahern <dsa@...ulusnetworks.com>
Subject: Re: [PATCH] net: ipv6: fix __rt6_purge_dflt_routers when forwarding
 is not set on all ifaces

On 9/1/20 1:56 AM, Eric Dumazet wrote:
> On Tue, Sep 1, 2020 at 8:58 AM Brian Vazquez <brianvv@...gle.com> wrote:
>>
>> The problem is exposed when the system has multiple ifaces and
>> forwarding is enabled on a subset of them, __rt6_purge_dflt_routers will
>> clean the default route on all the ifaces which is not desired.
>>
>> This patches fixes that by cleaning only the routes where the iface has
>> forwarding enabled.
>>
>> Fixes: 830218c1add1 ("net: ipv6: Fix processing of RAs in presence of VRF")

are you sure that is a Fixes tag for this problem? looking at that
change it only handles RA for tables beyond the main table; it does not
change the logic of how many or which routes are purged.