[ovs-discuss] ovs with docker

Shivaram Mysore shivaram.mysore at gmail.com
Thu Jan 2 09:45:16 UTC 2020

These NICs have nothing to do with OVS.  They are on the system 

You should check out the presentation on OVS in Docker http://www.openvswitch.org/support/ovscon2019/ to better understand 

::Sent from my mobile device::

> On Jan 2, 2020, at 1:51 PM, shuangyang qian <qsyqian at gmail.com> wrote:
> when i use ovs with docker, and found some unused virtual nic in docker network namespace, like below:
> 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1
>     link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
>     inet scope host lo
>        valid_lft forever preferred_lft forever
> 2: ovs-gretap0 at NONE: <BROADCAST,MULTICAST> mtu 1462 qdisc noop state DOWN group default qlen 1000
>     link/ether 00:00:00:00:00:00 brd ff:ff:ff:ff:ff:ff
> 3: erspan0 at NONE: <BROADCAST,MULTICAST> mtu 1450 qdisc noop state DOWN group default qlen 1000
>     link/ether 2e:87:57:9d:4a:d7 brd ff:ff:ff:ff:ff:ff
> 4: ovs-ip6gre0 at NONE: <NOARP> mtu 1448 qdisc noop state DOWN group default qlen 1
>     link/gre6 00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00 brd 00:00:00:00:00:00:00:00:00:00:00:00:00:00:00:00
> 5: ovs-ip6tnl0 at NONE: <NOARP> mtu 1452 qdisc noop state DOWN group default qlen 1
>     link/tunnel6 :: brd ::
> 29: eth0 at if30: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1430 qdisc noqueue state UP group default
>     link/ether 0a:00:00:32:02:03 brd ff:ff:ff:ff:ff:ff link-netnsid 0
>     inet brd scope global eth0
>        valid_lft forever preferred_lft forever
> except lo and eth0, the ovs-gre* 、erspan*、ovs-ip6* virtual nics is not i need. do some one can tell me how to delete them.
> BTW, the virtual nics alse on host network stack, so i think shoudl find a way to delete them in host. The unused virtual nics are created when i insmod openvswitch.ko which i make it from ovs tree. the version is 2.11.2.
> Thanks.
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