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Date:   Wed, 17 Apr 2019 08:43:06 -0700
From:   Richard Cochran <>
To:     Hangbin Liu <>
Cc:, David Miller <>,
        Miroslav Lichvar <>,
        Patrick McHardy <>,
        Jiri Benc <>,
Subject: Re: [PATCH net-next] macvlan: pass get_ts_info and SIOC[SG]HWTSTAMP
 ioctl to real device

On Wed, Apr 17, 2019 at 04:05:09PM +0800, Hangbin Liu wrote:
> On the other hand, Miroslav pointed that with NET_ADMIN enabled in container,
> a normal user could be mapped to root and is able to change the real devices's
> rx filter via ioctl on macvlan, which may affect the other ptp process on
> host. ptp over vlan also has this issue, but macvlan is more frequently used
> in container.

If NET_ADMIN is enabled in the container, don't the host and container
contend with each other for the physical interfaces anyhow?

(I'm not a container person, so forgive my ignorance.)


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