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From: Stephen Hemminger <stephen@networkplumber.org>
To: Maxime Coquelin <maxime.coquelin@redhat.com>,
	Tiwei Bie <tiwei.bie@intel.com>,
	Zhihong Wang <zhihong.wang@intel.com>
Cc: dev@dpdk.org
Subject: [dpdk-dev] vtap0 device creation (bug)?
Date: Fri, 8 Nov 2019 15:44:07 -0800
Message-ID: <20191108154407.0bd8734d@hermes.lan> (raw)

When I create a virtio-user device with rte_hotplug it creates a kernel device (ie vtap0).
This is normal an the device has ifindex N.

But later when device is configured an started the original vtap0 device is deleted
and a new one is created (with ifindex N+1).  This seems like a bug, if nothing
else it unnecessary overhead and link flapping for routing daemons.

Noticed only while tracking down a bug where after vtap was created the
address was being set, but then disappearing.

Is this intentional? Is it documented?

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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-08 23:44 Stephen Hemminger [this message]
2019-11-11  8:15 ` Tiwei Bie

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