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Date: Wed, 3 Apr 2024 19:07:10 -0700
From: Jakub Kicinski <kuba@kernel.org>
To: Venkat Venkatsubra <venkat.x.venkatsubra@oracle.com>
Cc: davem@davemloft.net, netdev@vger.kernel.org,
 linux-kernel@vger.kernel.org, maheshb@google.com, edumazet@google.com,
 gia-khanh.nguyen@oracle.com
Subject: Re: [PATCH net-next] Add handling of NETDEV_DOWN event
Message-ID: <20240403190704.6df9481d@kicinski-fedora-PC1C0HJN>
In-Reply-To: <1711892489-27931-1-git-send-email-venkat.x.venkatsubra@oracle.com>
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On Sun, 31 Mar 2024 06:41:28 -0700 Venkat Venkatsubra wrote:
> When ethP is the parent interface of ipvlan interface ethC,
> and you do
> 
> # ip link set ethP down
> 
> ethC's link state is not brought down.
> 
> In the below example, ens5 is the host interface which is the 
> parent of the ipvlan interface eth0 in the container.
> 
> Host:
> 
> [root@gkn-podman-x64 ~]# ip link set ens5 down
> [root@gkn-podman-x64 ~]# ip -d link show dev ens5
> 3: ens5: <BROADCAST,MULTICAST> mtu 9000 qdisc mq state DOWN 
>       ...
> [root@gkn-podman-x64 ~]#
> 
> Container:
> 
> [root@testnode-ol8 /]# ip -d link show dev eth0
> 2: eth0@if3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 9000 state UNKNOWN 
>         ...
>     ipvlan mode l2 bridge 
> [root@testnode-ol8 /]#
> 
> eth0 continues to remain UP.

No need to add a cover letter for a single patch.
Add what's relevant to the main commit message.