From: Alexander Duyck <alexander.h.duyck@redhat.com>
To: Sabrina Dubroca <sd@queasysnail.net>
Cc: netdev@vger.kernel.org
Subject: Re: ipv4 route dump broken with multiple subnets
Date: Tue, 10 Mar 2015 10:37:13 -0700 [thread overview]
Message-ID: <54FF2BC9.8080202@redhat.com> (raw)
In-Reply-To: <20150310170746.GA1743@kria>
On 03/10/2015 10:07 AM, Sabrina Dubroca wrote:
> With this setup (no other address assigned):
>
> ip link add type dummy
> ip link set dummy0 up
> ip a a 10.0.0.1/24 dev dummy0
>
> route dump works:
>
> # ip r
> 10.0.0.0/24 dev dummy0 proto kernel scope link src 10.0.0.1
>
>
> If I add another address:
>
> ip a a 10.0.1.1/24 dev dummy0
>
> or a route:
>
> ip r a 10.0.1.0/24 via 10.0.0.2
>
> # ip r
> <empty>
>
> It's the same with /proc/net/route instead of ip route.
>
> But with a default route the table appears again.
>
>
> This patch seems to fix the problem, but I'm not sure it is correct.
It looks like I can reproduce it as well if I just add dummy, and then
drop the default route. I will look into it and should be able to tell
you what is going on in the next hour or two.
- Alex
next prev parent reply other threads:[~2015-03-10 17:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-10 17:07 ipv4 route dump broken with multiple subnets Sabrina Dubroca
2015-03-10 17:37 ` Alexander Duyck [this message]
2015-03-10 18:25 ` [net-next PATCH] fib_trie: Correctly handle case of key == 0 in leaf_walk_rcu Alexander Duyck
2015-03-10 18:48 ` Sabrina Dubroca
2015-03-10 20:14 ` David Miller
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