From mboxrd@z Thu Jan  1 00:00:00 1970
From: Stephen Hemminger <stephen@networkplumber.org>
Subject: Re: [PATCH iproute2] ipmonitor: fix ip monitor can't work when
 NET_NS is not enabled
Date: Wed, 21 Sep 2016 16:33:40 -0700
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Cc: netdev@vger.kernel.org, nicolas.dichtel@6wind.com,
        Liping Zhang <liping.zhang@spreadtrum.com>
To: Liping Zhang <zlpnobody@gmail.com>
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On Tue, 20 Sep 2016 02:09:02 -0700
Liping Zhang <zlpnobody@gmail.com> wrote:

> From: Liping Zhang <liping.zhang@spreadtrum.com>
> 
> In ip monitor, netns_map_init will check getnsid is supported or not.
> But when /proc/self/ns/net does not exist, we just print out error
> messages and exit. So user cannot use ip monitor anymore when
> CONFIG_NET_NS is disabled:
>   # ip monitor
>   open("/proc/self/ns/net"): No such file or directory
> 
> If open "/proc/self/ns/net" failed, set have_rtnl_getnsid to false.
> 
> Fixes: d652ccbf8195 ("netns: allow to dump and monitor nsid")
> Signed-off-by: Liping Zhang <liping.zhang@spreadtrum.com>

Makes sense. Applied.