netdev - Proxy ARP is getting reset on a VLAN interface

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Message-ID: <CABDVJk9Btt8bpXr40EL_O9bqY-wAd7N5P9ghp0kTpDQkc8n4=w@mail.gmail.com>
Date:   Wed, 1 Apr 2020 22:36:30 +0530
From:   Nagaprabhanjan Bellari <nagp.lists@...il.com>
To:     netdev@...r.kernel.org
Subject: Proxy ARP is getting reset on a VLAN interface

Hi,

I need a small help w.r.t proxy_arp setting on an interface - even if
I set /sys/net/conf/ipv4/all/proxy_arp to 1, doing a ifdown and an
ifup on a vlan interface resets the proxy_arp setting.

This does not happen, for example on a physical interface. ifdown/ifup
"remembers" the setting and applies it properly. I am talking about a
3.x kernel.

Can something be done to keep this from happening?

Thanks,
-nagp