netdev - Re: Fw: [Bug 201071] New: Creating a vxlan in state 'up' does not give proper RTM

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Date:   Tue, 11 Sep 2018 15:10:56 -0700
From:   Roopa Prabhu <roopa@...ulusnetworks.com>
To:     Stephen Hemminger <stephen@...workplumber.org>
Cc:     netdev <netdev@...r.kernel.org>
Subject: Re: Fw: [Bug 201071] New: Creating a vxlan in state 'up' does not
 give proper RTM_NEWLINK message

On Mon, Sep 10, 2018 at 11:55 AM, Stephen Hemminger
<stephen@...workplumber.org> wrote:
>
>
> Begin forwarded message:
>
> Date: Mon, 10 Sep 2018 04:04:37 +0000
> From: bugzilla-daemon@...zilla.kernel.org
> To: stephen@...workplumber.org
> Subject: [Bug 201071] New: Creating a vxlan in state 'up' does not give proper RTM_NEWLINK message
>
>
> https://bugzilla.kernel.org/show_bug.cgi?id=201071
>
>             Bug ID: 201071
>            Summary: Creating a vxlan in state 'up' does not give proper
>                     RTM_NEWLINK message
>            Product: Networking
>            Version: 2.5
>     Kernel Version: 4.19-rc1
>           Hardware: All
>                 OS: Linux
>               Tree: Mainline
>             Status: NEW
>           Severity: normal
>           Priority: P1
>          Component: Other
>           Assignee: stephen@...workplumber.org
>           Reporter: liam.mcbirnie@...ing.com
>         Regression: Yes
>
> If a vxlan is created with state 'up', the RTM_NEWLINK message shows the state
> as down, and there no other netlink messages are sent.
> As a result, processes listening to netlink are never notified that the vxlan
> link is up.

thanks for the fwd. looking...



>
> eg.
> # ip link add test up type vxlan id 8 group 224.224.224.224 dev eth0
>
> Output of ip monitor link
> # 4: test: <BROADCAST,MULTICAST> mtu 1450 qdisc noop state DOWN group default
>       link/ether ee:cd:97:1a:cf:91 brd ff:ff:ff:ff:ff:ff
>
> Output of ip link show (expected from netlink message)
> # 4: test: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1450 qdisc noqueue state
> UNKNOWN group default qlen 1000
>       link/ether ee:cd:97:1a:cf:91 brd ff:ff:ff:ff:ff:ff
>
> This is a regression introduced by the following patch series.
> https://patchwork.ozlabs.org/patch/947181/
>
> --
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