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Date:   Thu, 20 Aug 2020 22:18:20 -0700
From:   Roopa Prabhu <roopa@...dia.com>
To:     Stephen Hemminger <stephen@...workplumber.org>,
        Roopa Prabhu <roopa@...ulusnetworks.com>
CC:     <dsahern@...il.com>, <netdev@...r.kernel.org>
Subject: Re: [PATCH iproute2 net-next] iplink: add support for protodown
 reason


On 8/20/20 9:36 PM, Stephen Hemminger wrote:
>
>
> On Thu, 20 Aug 2020 20:52:02 -0700
> Roopa Prabhu <roopa@...ulusnetworks.com> wrote:
>
>> +     if (tb[IFLA_PROTO_DOWN]) {
>> +             if (rta_getattr_u8(tb[IFLA_PROTO_DOWN]))
>> +                     print_bool(PRINT_ANY,
>> +                                "proto_down", " protodown on ", true);
> In general my preference is to use print_null() for presence flags.
> Otherwise you have to handle the false case in JSON as a special case.


ok, i will look. But this is existing code moved into a new function and 
has been

working fine for years.


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