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    SubjectRe: [PATCH net-net 0/4] Increase the limit of tuntap queues
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    From: "Michael S. Tsirkin" <mst@redhat.com>
    Date: Sun, 23 Nov 2014 22:30:32 +0200

    > qemu runs in the host, but it's unpriveledged: it gets
    > passed tun FDs by a priveledged daemon, and it only
    > has the rights to some operations,
    > in particular to attach and detach queues.
    >
    > The assumption always was that this operation is safe
    > and can't make kernel run out of resources.

    This creates a rather rediculous situation in my opinion.

    Configuring a network device is a privileged operation, the daemon
    should be setting this thing up.

    In no other context would we have to worry about something like this.


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